Leases - Other Information Related to Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income statement information:
Operating lease cost	$ 986	$ 958
Short-term lease cost	229	381
Variable lease cost	839	994
Total lease cost	2,054	2,333
Other information:
Cash paid for operating leases	$ 1,259	$ 1,224
Weighted-average remaining lease term (in months)	130 months	139 months
Weighted-average discount rate	7.40%	7.40%