Schedule of Components of Restricted Stock Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Restricted Stock Liabilities
Restricted stock liabilities (before imputed interest)	$ 2,307	$ 3,801
Less imputed interest	(78)	(177)
Present value of restricted stock liabilities	2,229	3,624
Less payments during the period	(710)	(1,472)
Restricted stock liabilities at end of period (reflected in accrued expenses and other)	$ 1,519	$ 2,152