Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited)

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Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Receivables, allowance for doubtful accounts $ 42 $ 42
Property and equipment, accumulated depreciation and amortization $ 1,599 $ 1,544
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 250,000 250,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 29,750,000 29,750,000
Common stock, shares issued (in shares) 17,865,088 17,786,959
Common stock, shares outstanding (in shares) 17,865,088 17,786,959