Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases
Total lease cost	$ 761	$ 879
Classification of operating leases
Operating lease right-of-use assets	1,820	1,833
Operating lease liability, current	609	538
Operating lease liability, non-current	$ 1,400	$ 1,574
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Accrued Liabilities, Current	Other Accrued Liabilities, Current
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Lease cost
Operating lease cost	$ 656	$ 656
Short-term lease cost	105	223
Total lease cost	$ 761	879
Lease Term and Discount Rate
Weighted-average remaining lease term	3 years 8 months 12 days
Weighted average discount rate	6.30%
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 677	719
Operating lease right-of-use assets obtained in exchange for new operating lease liabilities	$ 541	$ 393
Minimum
Leases
Initial lease term	1 year
Maximum
Leases
Initial lease term	7 years