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Consolidated Statement of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Additional Paid-in Capital
(Accumulated Deficit) Retained Earnings
Accumulated Other Comprehensive (Loss) Income
Treasury Stock
Beginning balance (in shares) at Dec. 31, 2017   18,788,000        
Beginning balance at Dec. 31, 2017 $ 105,665 $ 188 $ 134,361 $ (4,417) $ (11,317) $ (13,150)
Beginning balance, treasury stock (in shares) at Dec. 31, 2017           (1,659,000)
Net income (loss) (5,236)     (5,236)    
Other comprehensive income (loss) (1,384) [1]       (1,384)  
Stock-based compensation 1,592   1,592      
Sale of treasury stock (in shares)           377,000
Sale of treasury stock 4,464   1,478     $ 2,986
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)   149,000        
Exercise of stock options and issuance of restricted stock awards, net of forfeitures 78 $ 1 77      
Ending balance (in shares) at Jun. 30, 2018   18,937,000        
Ending balance at Jun. 30, 2018 102,431 $ 189 137,508 (12,401) (12,701) $ (10,164)
Ending balance, treasury stock (in shares) at Jun. 30, 2018           (1,282,000)
Beginning balance (in shares) at Mar. 31, 2018   18,804,000        
Beginning balance at Mar. 31, 2018 106,834 $ 188 136,718 (11,058) (8,850) $ (10,164)
Beginning balance, treasury stock (in shares) at Mar. 31, 2018           (1,282,000)
Net income (loss) (1,343)     (1,343)    
Other comprehensive income (loss) (3,851) [1]       (3,851)  
Stock-based compensation 739   739      
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)   133,000        
Exercise of stock options and issuance of restricted stock awards, net of forfeitures 52 $ 1 51      
Ending balance (in shares) at Jun. 30, 2018   18,937,000        
Ending balance at Jun. 30, 2018 $ 102,431 $ 189 137,508 (12,401) (12,701) $ (10,164)
Ending balance, treasury stock (in shares) at Jun. 30, 2018           (1,282,000)
Beginning balance (in shares) at Dec. 31, 2018 17,743,971 19,026,000        
Beginning balance at Dec. 31, 2018 $ 99,515 $ 190 139,617 (15,397) (14,731) $ (10,164)
Beginning balance, treasury stock (in shares) at Dec. 31, 2018 (1,282,422)         (1,282,000)
Net income (loss) $ 40,997          
Other comprehensive income (loss) 11,242 [1]       11,242  
Stock-based compensation 1,907   1,907      
Issuance of common stock under employee stock purchase plan (in shares)   23,000        
Issuance of common stock under employee stock purchase plan 218   218      
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)   271,000        
Exercise of stock options and issuance of restricted stock awards, net of forfeitures $ 117 $ 3 114      
Ending balance (in shares) at Jun. 30, 2019 18,018,895 19,320,000        
Ending balance at Jun. 30, 2019 $ 153,996 $ 193 141,856 25,600 (3,489) $ (10,164)
Ending balance, treasury stock (in shares) at Jun. 30, 2019 (1,282,422)         (1,282,000)
Beginning balance (in shares) at Mar. 31, 2019   19,134,000        
Beginning balance at Mar. 31, 2019 $ 95,598 $ 191 140,790 (21,576) (13,643) $ (10,164)
Beginning balance, treasury stock (in shares) at Mar. 31, 2019           (1,282,000)
Net income (loss) 47,176          
Other comprehensive income (loss) 10,154 [1]       10,154  
Stock-based compensation 1,033   1,033      
Exercise of stock options and issuance of restricted stock awards, net of forfeitures (in shares)   186,000        
Exercise of stock options and issuance of restricted stock awards, net of forfeitures $ 35 $ 2 33      
Ending balance (in shares) at Jun. 30, 2019 18,018,895 19,320,000        
Ending balance at Jun. 30, 2019 $ 153,996 $ 193 $ 141,856 $ 25,600 $ (3,489) $ (10,164)
Ending balance, treasury stock (in shares) at Jun. 30, 2019 (1,282,422)         (1,282,000)
[1] Tax impact was nominal for all periods.