Leases, Information Related to Operating Leases (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Cash Paid for Amounts Included in the Measurement of Lease Liabilities [Abstract]
Operating Cash Flow from Operating Leases	$ 192	$ 197	$ 795
Weighted-Average Remaining Lease Term - Operating Leases	6 years 9 months 14 days	7 years 8 months 4 days	7 years 3 months 29 days
Weighted-Average Discount Rate - Operating Leases	2.80%	3.20%	2.90%