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Lease Costs (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Jan. 01, 2019
Leases [Abstract]
Operating lease cost	$ 4,080
Variable Lease, Cost	1,100
Sublease income	(706)
Net lease cost	4,474
Remainder of 2019	1,616
2020	5,928
2021	6,537
2022	6,720
2023	6,568
2024	5,621
Thereafter	11,098
Total lease payments	44,088
Present value adjustment	(12,550)
Lease liabilities	$ 31,538	$ 27,700

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