Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands		9 Months Ended
	Jan. 01, 2019	Sep. 30, 2020
Leases [Abstract]
Operating cash flows from operating leases		$ 571
ROU assets obtained in exchange for new operating lease liabilities	$ 3,395	$ 0
Weighted-average remaining lease term in years for operating leases		5 years 10 months 9 days
Weighted-average discount rate for operating leases		5.15%