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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid in Capital
Accumulated Other Comprehensive Income
Retained Earnings
Balance at Dec. 31, 2015 $ 18,333 $ 8 $ 11,240 $ 310 $ 6,775
Balance, shares at Dec. 31, 2015   8,254,001      
Common stock issued to ESPP $ 18   18    
Common stock issued to ESPP, shares 8,142 8,142      
Treasury stock purchase, Value $ (71)   (71)    
Treasury stock purchase, Shares   (31,612)      
Restricted stock units [1] 563   563    
Restricted stock units, shares [1]   105,437      
Net income (loss) to common stockholders [2] (7,413)       (7,413)
Foreign currency translation (312)     (312)  
Balance at Dec. 31, 2016 11,118 $ 8 11,750 (2) (638)
Balance, shares at Dec. 31, 2016   8,335,968      
Common stock issued to ESPP $ 13   13    
Common stock issued to ESPP, shares 7,151 7,151      
Common stock issued as payment of preferred stock $ 450 $ 1 449    
Common stock issued as payment of preferred stock, shares   246,803      
Treasury stock purchase, Value (53)   (53)    
Treasury stock purchase, Shares   (17,342)      
Restricted stock units [1] 371   371    
Restricted stock units, shares [1]   97,070      
Net income (loss) to common stockholders [2] (2,584)       (2,584)
Warrants issued as part of debt refinancing 365   365    
Foreign currency translation 403     403  
Balance at Dec. 31, 2017 $ 10,083 $ 9 $ 12,895 $ 401 $ (3,222)
Balance, shares at Dec. 31, 2017   8,669,650      
[1] Converted to common stock.
[2] Net of preferred dividends of $356 and $353 in 2017 and 2016, respectively.