|
PENSION AND OTHER POSTRETIREMENT PLANS (Details) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Sep. 30, 2013
|
Sep. 30, 2012
|
Sep. 30, 2011
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
$ 123,713
|
$ 116,577
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
123,713
|
116,577
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
123,713
|
116,577
|
|
|
Level 1 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
93,964
|
85,697
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
93,964
|
85,697
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
93,964
|
85,697
|
|
|
Level 2 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
10,807
|
12,707
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
10,807
|
12,707
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
10,807
|
12,707
|
|
|
Level 3 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
18,942
|
18,173
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
|
Equity Securities - Stocks [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
36,127
|
34,127
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
36,127
|
34,127
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
36,127
|
34,127
|
|
|
Equity Securities - Stocks [Member] | Level 1 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
36,127
|
34,127
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
36,127
|
34,127
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
36,127
|
34,127
|
|
|
Equity Securities - Stocks [Member] | Level 2 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Equity Securities - Stocks [Member] | Level 3 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Equity Securities - Mutual Funds [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
31,827
|
29,059
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
31,827
|
29,059
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
31,827
|
29,059
|
|
|
Equity Securities - Mutual Funds [Member] | Level 1 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
30,507
|
29,059
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
30,507
|
29,059
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
30,507
|
29,059
|
|
|
Equity Securities - Mutual Funds [Member] | Level 2 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
1,320
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
1,320
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
1,320
|
0
|
|
|
Equity Securities - Mutual Funds [Member] | Level 3 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Fixed Income Securities [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
27,399
|
23,230
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
27,399
|
23,230
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
27,399
|
23,230
|
|
|
Fixed Income Securities [Member] | Level 1 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
17,912
|
10,523
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
17,912
|
10,523
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
17,912
|
10,523
|
|
|
Fixed Income Securities [Member] | Level 2 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
9,487
|
12,707
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
9,487
|
12,707
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
9,487
|
12,707
|
|
|
Fixed Income Securities [Member] | Level 3 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Cash and Cash Equivalents [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
9,418
|
11,988
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
9,418
|
11,988
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
9,418
|
11,988
|
|
|
Cash and Cash Equivalents [Member] | Level 1 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
9,418
|
11,988
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
9,418
|
11,988
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
9,418
|
11,988
|
|
|
Cash and Cash Equivalents [Member] | Level 2 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Cash and Cash Equivalents [Member] | Level 3 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Other Investments [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
18,942
|
18,173
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
|
Other Investments [Member] | Level 1 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Other Investments [Member] | Level 2 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
0
|
0
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
|
Other Investments [Member] | Level 3 [Member]
|
|
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, end of year |
18,942
|
18,173
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
|
Principal Retirement Plan [Member]
|
|
|
|
| Contributions during fiscal 2013: |
|
|
|
| Pension contributions |
2,500
|
|
|
| Other postretirement contributions |
0
|
|
|
|
Supplemental Retirement Plan [Member]
|
|
|
|
| Contributions during fiscal 2013: |
|
|
|
| Pension contributions |
725
|
|
|
| Other postretirement contributions |
0
|
|
|
|
Pension Plans [Member]
|
|
|
|
| Change in benefit obligation [Roll Forward] |
|
|
|
| Benefit obligation, beginning of year |
195,860
|
168,033
|
|
| Acquisitions |
9,437
|
0
|
|
| Service cost |
7,160
|
5,852
|
5,016
|
| Interest cost |
8,024
|
7,842
|
7,510
|
| Assumption changes |
(26,288)
|
19,701
|
|
| Actuarial (gain) loss |
(891)
|
688
|
|
| Benefit payments |
(7,225)
|
(6,256)
|
|
| Benefit obligation, end of year |
186,077
|
195,860
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, beginning of year |
116,577
|
100,554
|
|
| Acquisitions |
9,437
|
0
|
|
| Actual return |
10,838
|
16,000
|
|
| Benefit payments |
(7,225)
|
(6,256)
|
|
| Employer contributions |
3,523
|
6,279
|
|
| Fair value, end of year |
123,713
|
116,577
|
|
| Funded status |
(62,363)
|
(79,283)
|
|
| Unrecognized actuarial loss (gain) |
56,148
|
92,940
|
|
| Unrecognized prior service cost |
(1,935)
|
(2,142)
|
|
| Net amount recognized |
(8,150)
|
11,515
|
|
| Amounts recognized in the consolidated balance sheet: |
|
|
|
| Current liability |
(721)
|
(720)
|
|
| Noncurrent benefit liability |
(61,642)
|
(78,563)
|
|
| Accumulated other comprehensive loss (income) |
54,213
|
90,798
|
|
| Net amount recognized |
(8,150)
|
11,515
|
|
| Amounts recognized in accumulated other comprehensive loss: |
|
|
|
| Net actuarial loss |
56,148
|
92,940
|
|
| Prior service cost |
(1,935)
|
(2,142)
|
|
| Net amount recognized |
54,213
|
90,798
|
|
| Accumulated benefit obligations in excess of plan assets [Abstract] |
|
|
|
| Accumulated benefit obligation |
156,661
|
172,142
|
|
| Projected benefit obligation |
186,077
|
195,860
|
|
| Net periodic benefit cost [Abstract] |
|
|
|
| Service cost |
7,160
|
5,852
|
5,016
|
| Interest cost |
8,024
|
7,842
|
7,510
|
| Expected return on plan assets |
(9,071)
|
(7,836)
|
(7,398)
|
| Amortization: |
|
|
|
| Prior service cost |
(206)
|
(45)
|
26
|
| Net actuarial loss |
7,903
|
6,814
|
5,364
|
| Net benefit cost |
13,810
|
12,627
|
10,518
|
| Amounts of AOCL expected to be recognized in net periodic benefit costs [Abstract] |
|
|
|
| Net actuarial loss |
3,964
|
|
|
| Prior service cost |
(206)
|
|
|
| Weighted-average assumptions [Abstract] |
|
|
|
| Discount rate (in hundredths) |
5.00%
|
4.00%
|
4.75%
|
| Return on plan assets (in hundredths) |
8.00%
|
8.00%
|
8.00%
|
| Compensation increase (in hundredths) |
3.50%
|
3.50%
|
3.50%
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Equity securities |
67,954
|
63,186
|
|
| Fixed income, cash and cash equivalents |
36,817
|
35,218
|
|
| Other investments |
18,942
|
18,173
|
|
| Fair value of plan assets |
123,713
|
116,577
|
|
| Target allocation [Abstract] |
|
|
|
| Equity securities (in hundredths) |
55.00%
|
|
|
| Fixed income, cash and cash equivalents (in hundredths) |
30.00%
|
|
|
| Other investments (in hundredths) |
15.00%
|
|
|
| Total target asset allocation (in hundredths) |
100.00%
|
|
|
| Cash included in plan assets (in hundredths) |
2.00%
|
4.00%
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
123,713
|
116,577
|
|
| Benefit payments expected to be paid [Abstract] |
|
|
|
| 2014 |
7,080
|
|
|
| 2015 |
7,722
|
|
|
| 2016 |
8,190
|
|
|
| 2017 |
8,550
|
|
|
| 2018 |
9,063
|
|
|
| 2019-2023 |
53,709
|
|
|
| Total benefits expected to be paid |
94,314
|
|
|
|
Pension Plans [Member] | Other Investments [Member] | Level 3 [Member]
|
|
|
|
| Change in benefit obligation [Roll Forward] |
|
|
|
| Acquisitions |
0
|
3,800
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, beginning of year |
18,173
|
13,375
|
|
| Acquisitions |
0
|
3,800
|
|
| Dispositions |
0
|
0
|
|
| Realized Gains (Losses) |
48
|
766
|
|
| Unrealized Gains |
721
|
232
|
|
| Fair value, end of year |
18,942
|
18,173
|
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
18,942
|
18,173
|
|
|
Other Postretirement Plans [Member]
|
|
|
|
| Change in benefit obligation [Roll Forward] |
|
|
|
| Benefit obligation, beginning of year |
28,831
|
27,547
|
|
| Acquisitions |
0
|
0
|
|
| Service cost |
796
|
730
|
632
|
| Interest cost |
1,129
|
1,283
|
1,254
|
| Assumption changes |
(10,270)
|
2,508
|
|
| Actuarial (gain) loss |
(854)
|
(2,473)
|
|
| Benefit payments |
(751)
|
(764)
|
|
| Benefit obligation, end of year |
18,881
|
28,831
|
|
| Change in plan assets [Roll Forward] |
|
|
|
| Fair value, beginning of year |
0
|
0
|
|
| Acquisitions |
0
|
0
|
|
| Actual return |
0
|
0
|
|
| Benefit payments |
(751)
|
(764)
|
|
| Employer contributions |
751
|
764
|
|
| Fair value, end of year |
0
|
0
|
|
| Funded status |
(18,881)
|
(28,831)
|
|
| Unrecognized actuarial loss (gain) |
(3,001)
|
8,561
|
|
| Unrecognized prior service cost |
(1,502)
|
(1,774)
|
|
| Net amount recognized |
(23,384)
|
(22,044)
|
|
| Amounts recognized in the consolidated balance sheet: |
|
|
|
| Current liability |
(925)
|
(1,106)
|
|
| Noncurrent benefit liability |
(17,956)
|
(27,725)
|
|
| Accumulated other comprehensive loss (income) |
(4,503)
|
6,787
|
|
| Net amount recognized |
(23,384)
|
(22,044)
|
|
| Amounts recognized in accumulated other comprehensive loss: |
|
|
|
| Net actuarial loss |
(3,001)
|
8,561
|
|
| Prior service cost |
(1,502)
|
(1,774)
|
|
| Net amount recognized |
(4,503)
|
6,787
|
|
| Net periodic benefit cost [Abstract] |
|
|
|
| Service cost |
796
|
730
|
632
|
| Interest cost |
1,129
|
1,283
|
1,254
|
| Expected return on plan assets |
0
|
0
|
0
|
| Amortization: |
|
|
|
| Prior service cost |
(272)
|
(451)
|
(476)
|
| Net actuarial loss |
439
|
535
|
407
|
| Net benefit cost |
2,092
|
2,097
|
1,817
|
| Contributions during fiscal 2013: |
|
|
|
| Pension contributions |
0
|
|
|
| Other postretirement contributions |
751
|
|
|
| Amounts of AOCL expected to be recognized in net periodic benefit costs [Abstract] |
|
|
|
| Net actuarial loss |
(87)
|
|
|
| Prior service cost |
(195)
|
|
|
| Weighted-average assumptions [Abstract] |
|
|
|
| Discount rate (in hundredths) |
5.00%
|
4.00%
|
4.75%
|
| Return on plan assets (in hundredths) |
0.00%
|
0.00%
|
0.00%
|
| Compensation increase (in hundredths) |
0.00%
|
0.00%
|
0.00%
|
| Weighted average asset allocation [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Fair value of plan assets [Abstract] |
|
|
|
| Fair value of plan assets |
0
|
0
|
|
| Benefit payments expected to be paid [Abstract] |
|
|
|
| 2014 |
926
|
|
|
| 2015 |
917
|
|
|
| 2016 |
1,004
|
|
|
| 2017 |
1,126
|
|
|
| 2018 |
1,186
|
|
|
| 2019-2023 |
6,275
|
|
|
| Total benefits expected to be paid |
11,434
|
|
|
| Assumed health care cost trend rates [Abstract] |
|
|
|
| Per capita cost of health care benefits assumed for next fiscal year (in hundredths) |
8.00%
|
|
|
| Ultimate health care cost trend rate (in hundredths) |
5.00%
|
|
|
| Year that rate reaches ultimate trend rate |
2030
|
|
|
| Effect of one-percentage point change in assumed health care cost trend rates [Abstract] |
|
|
|
| Effect of one percentage point increase on accumulated postretirement benefit obligation |
967
|
|
|
| Effect of one percentage point increase on service and interest cost components |
107
|
|
|
| Effect of one percentage point decrease on accumulated postretirement benefit obligation |
846
|
|
|
| Effect of one percentage point decrease on service and interest cost components |
$ 94
|
|
|