Lease Commitments - Summary of Supplemental Balance Sheet Information Related to the Operating Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Operating lease right-of-use assets	$ 2,261	$ 2,373
Liabilities:
Operating lease liabilities, current	477	474
Operating lease liabilities	1,467	1,557
Total operating lease liabilities	$ 1,944	$ 2,031