Leases - Undiscounted Future Lease Payments Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Operating Leases after Adoption of ASC Topic 842
2019 (excluding the 3 months ended March 31, 2019)	$ 4,584
2020	5,522
2021	4,222
2022	3,483
2023	2,598
Thereafter	12,160
Total lease payments	32,569
Less imputed interest	(5,392)
Total discounted future lease payments	27,177
Finance Leases after Adoption of ASC Topic 842
2019 (excluding the 3 months ended March 31, 2019)	209
2020	36
2021	0
2022	0
2023	0
Thereafter	0
Total lease payments	245
Less imputed interest	(2)
Total discounted future lease payments	$ 243
Operating Leases before Adoption of ASC Topic 842
2019		$ 6,004
2020		4,871
2021		3,877
2022		3,226
2023		2,617
Thereafter		11,111
Total lease payments		31,706
Capital Leases before Adoption of ASC Topic 842
2019		279
2020		35
2021		0
2022		0
2023		0
Thereafter		0
Total lease payments		$ 314