Stockholders' Equity - Per Share Results (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings per share:
Net income (loss)	$ 269	$ (768)
Weighted average shares outstanding - basic	10,185,000	6,236,000
Incremental shares from assumed exercise of stock options and warrants and the grant of restricted stock units	236,000
Adjusted weighted average shares for computation of diluted per share results	10,421,000	6,236,000
Incremental shares from assumed exercise of stock options excluded due to anti-dilutive effect		95,000
Warrant
Earnings per share:
Incremental shares from assumed exercise of stock options excluded due to anti-dilutive effect		515,747