Leases - Lease Payments Obligations (Details) $ in Thousands	Jun. 30, 2019 USD ($)
Leases [Abstract]
2019	$ 3,061
2020	6,156
2021	5,729
2022	5,068
2023	4,975
Thereafter	35,288
Total lease payments	60,277
Less: imputed interest	13,956
Present value of lease liabilities	$ 46,321