Stock-Based Compensation, Stock Option Activity (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Aggregate Intrinsic Value [Abstract]
Weighted average grant-date fair value of options granted (in dollars per share)	$ 1.55
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option grants (in shares)	0
Stock Options [Roll Forward]
Outstanding, beginning of year (in shares)	862,488
Options exercised (in shares)	(16,800)
Options forfeited (in shares)	(6,660)
Outstanding, end of period (in shares)	839,028	862,488
Options vested and exercisable, end of period (in shares)	592,632
Weighted Average Exercise Price [Abstract]
Outstanding, beginning of year (in dollars per share)	$ 4.41
Options exercised (in dollars per share)	2.37
Options forfeited (in dollars per share)	3.28
Outstanding, end of period (in dollars per share)	4.46	$ 4.41
Options vested and exercisable, end of period (in dollars per share)	$ 4.58
Weighted Average Remaining Contractual Life [Abstract]
Outstanding	8 years	8 years 2 months 12 days
Options vested and exercisable	8 years
Aggregate Intrinsic Value [Abstract]
Outstanding, beginning of year	$ 8,088,660
Options exercised	248,312
Options forfeited	92,357
Outstanding, end of period	10,645,951	$ 8,088,660
Options vested and exercisable	$ 7,447,226