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CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (DEFICIT) - USD ($)
$ in Thousands
Total
Common Stock
Treasury Stock
Additional Paid-In Capital
Retained Earnings (Accumulated Deficit)
Accumulated Other Comprehensive Loss
Restricted Stock
Restricted Stock
Common Stock
Restricted Stock
Treasury Stock
Beginning balance (in shares) at Dec. 31, 2015   22,114,620 24,860            
Beginning balance at Dec. 31, 2015 $ 3,729 $ 22 $ (123) $ 4,146 $ (316) $ 0      
Increase (Decrease) in Stockholders' Equity                  
Foreign currency translation adjustment 0                
Vesting of restricted stock (in shares)   167,090              
Proceeds from equity issuance, net of transaction costs (in shares)   12,577,500              
Proceeds from equity issuance, net of transaction costs 127,302 $ 13   127,289          
Exercise of warrants (in shares)   3,999,998              
Exercise of warrants 22 $ 4   18          
Stock-based compensation 1,426     1,426          
Restricted stock buy back (in shares)   42,734 42,734            
Restricted stock buy back (416)   $ (416)            
Net income 10,379       10,379        
Ending balance (in shares) at Dec. 31, 2016   38,816,474 67,594            
Ending balance at Dec. 31, 2016 142,442 $ 39 $ (539) 132,879 10,063 0      
Increase (Decrease) in Stockholders' Equity                  
Foreign currency translation adjustment 0                
Vesting of restricted stock (in shares)   90,017         90,000    
Proceeds from equity issuance, net of transaction costs (in shares)   1,500,000              
Proceeds from equity issuance, net of transaction costs 24,169 $ 1   24,168          
Stock-based compensation 1,973     1,973          
Employee stock purchase plan compensation 39     39          
Restricted stock buy back (in shares)   13,458 13,458            
Restricted stock buy back (127)   $ (127)            
Net income 21,526       21,526        
Ending balance (in shares) at Dec. 31, 2017   40,393,033 81,052            
Ending balance at Dec. 31, 2017 190,022 $ 40 $ (666) 159,059 31,589 0      
Increase (Decrease) in Stockholders' Equity                  
Foreign currency translation adjustment (313)         (313)      
Vesting of restricted stock (in shares)   177,464         177,000    
Stock-based compensation 2,937     2,937          
Employee stock purchase plan compensation 72     72          
Employee stock purchase plan issuance (in shares)   21,964              
Employee stock purchase plan issuance 127     127          
Restricted stock buy back (in shares)   588,200 588,200         29,783 29,783
Restricted stock buy back (1,999)   $ (1,999)       $ (174)   $ (174)
Net income 18,688       18,688        
Ending balance (in shares) at Dec. 31, 2018   39,974,478 699,035            
Ending balance at Dec. 31, 2018 $ 209,360 $ 40 $ (2,839) $ 162,195 $ 50,277 $ (313)