Leases - Components of Lease Expense, Lease Term and Discount Rate (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 1,101	$ 1,266
Short-term lease cost	17	21
Variable lease cost	194	43
Sublease income	(18)	(17)
Total lease cost	$ 1,294	$ 1,313
Weighted Average Remaining Lease Term	3 years 3 months 18 days
Weighted Average Discount Rate	3.80%