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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-In Capital [Member]
Accumulated Other Comprehensive Income [Member]
Accumulated Deficit [Member]
Balance at Dec. 31, 2017 $ 192,951 $ 1,370 $ 216,006 $ 291 $ (24,716)
Balance, shares at Dec. 31, 2017   136,996,000      
Restricted stock issued and vesting of restricted stock units, net   $ 7 (7)    
Restricted stock issued and vesting of restricted stock units net, shares   667,000      
Shares repurchased (734)   (734)    
Shares repurchased, shares   (60,000)      
Exercise of stock options, net 54 $ 1 53    
Exercise of stock options net, shares   148,000      
Stock-based compensation 3,309   3,309    
Stock issuance costs (139)   (139)    
Other comprehensive income 872     872  
Dividends (4,132)       (4,132)
Net income 9,424       9,424
Balance at Mar. 31, 2018 201,605 $ 1,378 218,488 1,163 (19,424)
Balance, shares at Mar. 31, 2018   137,751,000      
Balance at Dec. 31, 2018 $ 358,335 $ 1,532 363,655 467 (7,319)
Balance, shares at Dec. 31, 2018 153,202,000 153,202,000      
Restricted stock issued and vesting of restricted stock units, net   $ 21 (21)    
Restricted stock issued and vesting of restricted stock units net, shares   2,145,000      
Shares repurchased $ (2,005) $ (2) (2,003)    
Shares repurchased, shares   (311,000)      
Exercise of stock options, net 14   14    
Exercise of stock options net, shares   20,000      
Stock-based compensation 3,072   3,072    
Other comprehensive income 291     291  
Dividends (5,097)       (5,097)
Net income 8,824       8,824
Balance at Mar. 31, 2019 $ 363,434 $ 1,551 $ 364,717 $ 758 $ (3,592)
Balance, shares at Mar. 31, 2019 155,056,000 155,056,000