Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating leases
2019	$ 1,093
2020	4,451
2021	3,989
2022	3,489
2023	3,267
Thereafter	15,365
Total minimum lease payments	31,654
Less: imputed interest	(6,209)
Present value of lease liabilities	25,445
Less current portion	(4,214)
Total long-term lease liabilities	21,231
Finance leases
2019	192
2020	150
2021	4
Total minimum lease payments	346
Less: imputed interest	(6)
Present value of lease liabilities	340
Less current portion	(334)
Total long-term lease liabilities	$ 6