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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Beginning balance at Dec. 31, 2019 $ 115 $ 32,604 $ 25,348 $ (32,110) $ (31) $ 25,926
Beginning balance (in shares) at Dec. 31, 2019 7,470,248          
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of shares from exercise of stock options $ 1 374 0 0 0 375
Issuance of shares from exercise of stock options (in shares) 62,500          
Issuance of common stock on restricted stock units $ 0 0 0 0 0 0
Issuance of common stock on restricted stock units (in shares) 32,725          
Issuance of common stock, net of issuance cost $ 14 8,723 0 0 0 8,737
Issuance of common stock, net of issuance cost (in shares) 1,380,000          
Relinquishment of stock awards and deferred stock units to pay withholding taxes $ 0 (41) 0 0 0 (41)
Relinquishment of stock awards and deferred stock units to pay withholding taxes (in shares) (14,088)          
Share-based compensation expense $ 0 876 0 0 0 876
Foreign currency translation adjustment, net of tax 0 0 0 0 (7) (7)
Net loss 0 0 (5,630) 0 0 (5,630)
Ending balance at Dec. 31, 2020 $ 130 42,536 19,718 (32,110) (38) $ 30,236
Ending balance (in shares) at Dec. 31, 2020 8,931,385         12,976,227
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Issuance of shares from exercise of stock options $ 0 436 0 0 0 $ 436
Issuance of shares from exercise of stock options (in shares) 97,000          
Issuance of common stock on restricted stock units $ 0 0 0 0 0 0
Issuance of common stock on restricted stock units (in shares) 50,525          
Issuance of common stock, net of issuance cost $ 9 11,201 0 0 0 11,210
Issuance of common stock, net of issuance cost (in shares) 842,375          
Relinquishment of stock awards and deferred stock units to pay withholding taxes $ 0 (133) 0 0 0 (133)
Relinquishment of stock awards and deferred stock units to pay withholding taxes (in shares) (48,396)          
Share-based compensation expense $ 0 1,206 0 0 0 1,206
Foreign currency translation adjustment, net of tax 0 0 0 0 181 181
Net loss 0 0 (4,145) 0 0 (4,145)
Ending balance at Dec. 31, 2021 $ 139 $ 55,246 $ 15,573 $ (32,110) $ 143 $ 38,991
Ending balance (in shares) at Dec. 31, 2021 9,872,889         13,917,731