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Leases - Maturities of Operating and Financing Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Finance Lease
Remaining, 2019	$ 260
2020	219
2021	21
2022	76
2023	0
2024	0
Thereafter	0
Total lease payments	576
Less imputed interest	(33)
Total lease liabilities	543		$ 0
Operating Lease
Remaining, 2019	6,026
2020	4,921
2021	3,063
2022	2,419
2023	1,549
2024	718
Thereafter	770
Total lease payments	19,466
Less imputed interest	(1,523)
Total lease liabilities	$ 17,943	$ 17,900

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