Lease Commitments - Maturities of Operating and Financing Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Operating Leases
2021	$ 24,947
2022	21,143
2023	16,677
2024	13,315
2025	10,201
After 2025	15,921
Total lease payments	102,204
Less: Interest	(7,475)
Present value of lease liabilities	94,729
Finance Leases
2021	855
2022	781
2023	425
2024	224
2025	6
After 2025	0
Total lease payments	2,291
Less: Interest	(181)
Present value of lease liabilities	2,110
Lease Liabilities, Payments Due [Abstract]
2021	25,802
2022	21,924
2023	17,102
2024	13,539
2025	10,207
After 2025	15,921
Total lease payments	104,495
Less: Interest	(7,656)
Present value of lease liabilities	$ 96,839	$ 84,234

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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-Subparagraph (b)
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