Leases - Undiscounted Future Lease Payments Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Operating Leases after Adoption of ASC Topic 842
2019 (excluding the nine months ended September 30, 2019)	$ 1,516
2020	5,557
2021	4,267
2022	3,510
2023	2,619
2024	1,996
Thereafter	9,167
Total lease payments	28,632
Less imputed interest	(4,418)
Total discounted future lease payments	24,214
Finance Leases after Adoption of ASC Topic 842
2019 (excluding the nine months ended September 30, 2019)	58
2020	35
2021	0
2022	0
2023	0
2024	0
Thereafter	0
Total lease payments	93
Less imputed interest	(1)
Total discounted future lease payments	$ 92
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

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