Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Finance lease, operating cash flows	$ 40	$ 2	$ 121	$ 6
Finance lease, financing cash flows	23	21	67	63
Operating lease, operating cash flows	$ 706	$ 565	$ 1,994	$ 1,541