Matthews International Corporation Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

ACQUISITIONS AND DIVESTITURES - Narrative (Details)

ACQUISITIONS AND DIVESTITURES - Narrative (Details) - USD ($) $ in Thousands		1 Months Ended							3 Months Ended		12 Months Ended
	May 01, 2025	May 31, 2025	Mar. 31, 2025	Oct. 31, 2024	Jan. 31, 2024	Sep. 30, 2023	Mar. 31, 2023	Feb. 28, 2023	Sep. 30, 2025	Dec. 31, 2023	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2023
Business Combination [Line Items]
Payment to acquire business, net of cash acquired											$ 55,832	$ 5,825	$ 15,341
Sales											1,497,689	1,795,737	1,880,896
Memorialization
Business Combination [Line Items]
Payment to acquire business, net of cash acquired								$ 8,650
Sales											809,514	829,731	842,997
Purchase price								18,384
Deferred purchase price amount								$ 9,734
Deferred purchase price amount, payment term								2 years
Contingent consideration liability								$ 3,800
Contingent consideration liability, payment term								4 years
Industrial Technologies
Business Combination [Line Items]
Payment to acquire business, net of cash acquired							$ 4,759
Sales											342,229	433,156	505,751
Gain on sale of SGK business						$ 1,827					(2,072)		1,827
Proceeds from other divestitures						6,700
Contingent consideration receivable						$ 2,250
Contingent consideration receivable, contingency period						2 years
SGK Brand Solutions
Business Combination [Line Items]
Payment to acquire business, net of cash acquired										$ 1,932
Sales											345,946	532,850	532,148
The Dodge Company
Business Combination [Line Items]
Sales											43,000
SGK Brand Solutions
Business Combination [Line Items]
Proceeds from sale of SGK Business											228,004	0	0
Gain on sale of SGK business											55,139	0	0
Income before income taxes, divested business											12,647	6,526	12,238
SGK Brand Solutions \| Disposal Group, Disposed of by Sale, Not Discontinued Operations
Business Combination [Line Items]
Sale of SGK business	$ 50,000
Proceeds from sale of SGK Business	228,004
Cash divested from deconsolidation	$ 22,996
Gain on sale of SGK business									$ 55,139
Gain (loss) on disposition of business, net of tax									$ 6,158
Other Divestitures
Business Combination [Line Items]
Gain on sale of SGK business			$ 2,072								3,177	1,428	2,980
Proceeds from other divestitures			$ 2,049								$ 2,049	$ 544	$ 6,700
Propelis
Business Combination [Line Items]
Equity ownership percentage (as percent)	40.00%
The Dodge Company
Business Combination [Line Items]
Payment to acquire business, net of cash acquired		$ 55,624
Memorialization
Business Combination [Line Items]
Payment to acquire business, net of cash acquired				$ 2,218	$ 5,825