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Consolidated Statements of Stockholders' Equity - USD ($)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Treasury Stock [Member]
Total
Balance (in shares) at Dec. 31, 2015 20,776,544          
Balance at Dec. 31, 2015 $ 208,000 $ 152,077,000 $ (106,812,000) $ (25,760,000) $ (1,000)  
Net (loss) income     6,043,000     $ 6,043,000
Employee benefit related, net of tax of $400 and $0 in 2017 and 2016, respectively       942,000   942,000
Foreign currency translation adjustment       (1,780,000)    
Restricted common stock grant (in shares) 793,500          
Restricted common stock grant $ 5,000 (5,000)     $ 1,000  
Noncash compensation (in shares) 48,000          
Noncash compensation   1,372,000        
Treasury stock (in shares) (94,000)          
Retire treasury stock (in shares) (194,354)          
Retire treasury stock   (192,000)        
Balance (in shares) at Dec. 31, 2016 21,329,690          
Balance at Dec. 31, 2016 $ 213,000 153,252,000 (100,769,000) (26,598,000)   26,098,000
Net (loss) income     (10,822,000)     (10,822,000)
Employee benefit related, net of tax of $400 and $0 in 2017 and 2016, respectively       628,000   628,000
Foreign currency translation adjustment       419,000    
Restricted common stock grant (in shares) 199,000          
Restricted common stock grant $ 2,000 (2,000)        
Noncash compensation (in shares) 42,000          
Noncash compensation   730,000        
Treasury stock (in shares) (39,000)          
Retire treasury stock (in shares) (109,613)          
Retire treasury stock $ (1,000) (122,000)        
Balance (in shares) at Dec. 31, 2017 21,422,077          
Balance at Dec. 31, 2017 $ 214,000 $ 153,858,000 $ (111,591,000) $ (25,551,000)   $ 16,930,000