Leases - Undiscounted Future Lease Payments Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Operating Leases after Adoption of ASC Topic 842
2019 (excluding the six months ended June 30, 2019)	$ 3,223
2020	5,723
2021	4,408
2022	3,643
2023	2,753
Thereafter	12,822
Total lease payments	32,572
Less imputed interest	(5,390)
Total discounted future lease payments	27,182
Finance Leases after Adoption of ASC Topic 842
2019 (excluding the six months ended June 30, 2019)	89
2020	34
2021	0
2022	0
2023	0
Thereafter	0
Total lease payments	123
Less imputed interest	(1)
Total discounted future lease payments	$ 122
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