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Lease Costs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease cost	$ 2,701
Variable Lease, Cost	618
Sublease income	(471)
Net lease cost	2,848
Remainder of 2019	3,201
2020	5,603
2021	5,291
2022	5,450
2023	5,279
2024	4,293
Thereafter	10,081
Total lease payments	39,198
Present value adjustment	(11,276)
Lease liabilities	$ 27,922	$ 27,700

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