| Basis of Presentation New Accounting Pronouncements Adopted (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Oct. 01, 2019 | 
|---|---|---|
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| Operating lease, right-of-use asset | $ 76,682 | |
| Operating lease liability | $ 77,463 | |
| Accounting Standards Update 2016-02 | ||
| New Accounting Pronouncements or Change in Accounting Principle [Line Items] | ||
| Operating lease, right-of-use asset | $ 80,000 | 
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available. 
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef 
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- Details 
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