Leases - Lessee Arrangements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Jul. 31, 2020
Leases
Lease agreement term				61 months
Remaining lease term	4 years 6 months
Options to renew	false
Lease expenses	$ 44	$ 17
ROU asset	$ 373		$ 399
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Prepaid Expense and Other Assets, Current		Prepaid Expense and Other Assets, Current
Current lease liabilities	$ 77		$ 75
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Liabilities, Current		Other Liabilities, Current
Noncurrent lease liabilities	$ 305		$ 332
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent		Other Liabilities, Noncurrent