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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balances (in shares) at Dec. 31, 2013 9,449,299        
Balances at Dec. 31, 2013 $ 94 $ 114,559 $ 148,458 $ (1,261) $ 261,850
Net loss     (17,887)   (17,887)
Foreign currency cash flow hedge, net       15 15
Pension liability adjustment       (587) (587)
Issuance of common stock under stock compensation plans (in shares) 70,768        
Issuance of common stock under stock compensation plans $ 1 (1,256)     (1,255)
Tax benefit from stock compensation plans   553     553
Share-based compensation expense   2,946     2,946
Balances (in shares) at Dec. 31, 2014 9,520,067        
Balances at Dec. 31, 2014 $ 95 116,802 130,571 (1,833) 245,635
Net loss     (29,388)   (29,388)
Foreign currency cash flow hedge, net       57 57
Pension liability adjustment       238 238
Issuance of common stock under stock compensation plans (in shares) 44,685        
Issuance of common stock under stock compensation plans $ 1 (424)     (423)
Tax benefit from stock compensation plans   19     19
Share-based compensation expense   1,774     1,774
Balances (in shares) at Dec. 31, 2015 9,564,752        
Balances at Dec. 31, 2015 $ 96 117,819 101,183 (1,538) 217,560
Tax deficiency from stock compensation plans   (352)     (352)
Net loss     (9,263)   (9,263)
Foreign currency cash flow hedge, net       (76) (76)
Pension liability adjustment       131 131
Issuance of common stock under stock compensation plans (in shares) 36,259        
Issuance of common stock under stock compensation plans   (31)     (31)
Share-based compensation expense   1,801     1,801
Balances (in shares) at Dec. 31, 2016 9,601,011        
Balances at Dec. 31, 2016 $ 96 118,680 $ 91,920 $ (1,483) 209,213
Tax deficiency from stock compensation plans   $ (909)     $ (909)