Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Operating Leases
2019 (excluding the three months ended March 31, 2019)	$ 8,391
2020	13,387
2021	9,838
2022	5,999
2023	4,320
After 2023	13,634
Total lease payments	55,569
Less imputed interest	(11,169)
Total	44,400
Finance Leases
2019 (excluding the three months ended March 31, 2019)	626
2020	913
2021	667
2022	216
2023	100
After 2023	26
Total lease payments	2,548
Less imputed interest	(161)
Total	$ 2,387