Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Other Current Assets:
Lease receivable, net	$ 29	$ 36
Deferred acquisition costs	46	72
Prepaid expenses	3,664	679
Interest receivable	966	0
Deferred transaction costs	0	5,892
Total Other Current Assets	4,705	6,679
Other Assets:
Lease receivable, net	16	16
Deferred acquisition costs	35	48
Security deposits	507	235
Total Other Assets	$ 558	$ 299