Lease Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 656	$ 642
Operating cash flows from finance leases	3	6
Financing cash flows from finance leases	29	20
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 0	$ 1,638