Lease Commitments - Maturities of Operating and Financing Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Operating Leases
2020	$ 31,397
2021	18,020
2022	13,691
2023	9,693
2024	6,236
After 2024	17,793
Total lease payments	96,830
Less: Interest	(13,796)
Present value of lease liabilities	83,034
Finance Leases
2020	322
2021	323
2022	311
2023	275
2024	127
After 2024	0
Total lease payments	1,358
Less: Interest	(158)
Present value of lease liabilities	1,200
Lease Liabilities, Payments Due [Abstract]
2020	31,719
2021	18,343
2022	14,002
2023	9,968
2024	6,363
After 2024	17,793
Total lease payments	98,188
Less: Interest	(13,954)
Present value of lease liabilities	$ 84,234