Lease Commitments - Maturities of Operating and Financing Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Leases
Remainder of 2019	$ 8,119
2020	31,099
2021	17,802
2022	13,494
2023	9,549
After 2024	24,016
Total lease payments	104,079
Less: Interest	15,113
Present value of lease liabilities	88,966
Finance Leases
Remainder of 2019	0
2020	0
2021	5,063
2022	0
2023	0
After 2024	0
Total lease payments	5,063
Less: Interest	0
Present value of lease liabilities	5,063
Lease Liabilities, Payments Due [Abstract]
Remainder of 2019	8,119
2020	31,099
2021	22,865
2022	13,494
2023	9,549
After 2024	24,016
Lease, Liability, Payments, Due	109,142
Total lease payments	15,113
Present value of lease liabilities	$ 94,029