Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Leases
2019 (excluding the three months ended March 31, 2019)	$ 4,192
2020	13,564
2021	10,077
2022	6,242
2023	4,430
After 2023	25,907
Total lease payments	64,412
Less: Imputed interest	(19,495)
Total	44,917
Finance Leases
2019 (excluding the three months ended March 31, 2019)	298
2020	893
2021	653
2022	423
2023	140
After 2023	34
Total lease payments	2,441
Less: Imputed interest	(172)
Total	$ 2,269