Leases - Maturity of Lease Liability (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Operating Leases
2019 (remainder of year)	$ 4,330
2020	6,234
2021	5,062
2022	3,987
2023	3,071
Thereafter	9,882
Total lease payments	32,566
Less: Interest	4,221
Present value of lease liabilities	28,345
Finance Lease, Liability, Payment, Due [Abstract]
2019 (remainder of year)	168
2020	320
2021	320
2022	320
2023	215
Thereafter	0
Total lease payments	1,343
Less: Interest	117
Present value of lease liabilities	1,226
Total
2019 (remainder of year)	4,498
2020	6,554
2021	5,382
2022	4,307
2023	3,286
Thereafter	9,882
Total lease payments	33,909
Less: Interest	4,338
Present value of lease liabilities	$ 29,571
Operating Leases Before Topic 842 Adoption
2019		$ 9,112
2020		5,707
2021		4,630
2022		3,816
2023		3,144
Thereafter		4,507
Total operating leases		$ 30,916