Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2019
Lessee, Lease, Description [Line Items]
Operating lease, liability		$ 2,662	$ 3,081
Lease right-of-use assets		$ 2,569	$ 3,017
Operating leases, rent expense	$ 1,800
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease term		1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease term		4 years
ASU 2016-02
Lessee, Lease, Description [Line Items]
Operating lease, liability				$ 4,000
Lease right-of-use assets				$ 4,000