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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive (Loss) Income
Total
Balances at the beginning at Dec. 31, 2019 $ 19 $ 91,874 $ 20,676 $ 26 $ 112,595
Balances at the beginning (in shares) at Dec. 31, 2019 19,152,715        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation   2,728     2,728
Exercise of common stock options and vesting of performance and restricted stock units   172     172
Exercise of common stock options and vesting of performance and restricted stock units (in shares) 96,186        
Taxes paid for net share settlement of performance and restricted stock units   (1,160)     (1,160)
Taxes paid for net share settlement of performance and restricted stock units (in shares) (22,236)        
Comprehensive loss for the period     (1,307) 12 (1,295)
Balances at the end at Mar. 31, 2020 $ 19 93,614 19,369 $ 38 113,040
Balances at the end (in shares) at Mar. 31, 2020 19,226,665        
Balances at the beginning at Dec. 31, 2020 $ 19 104,675 20,056   124,750
Balances at the beginning (in shares) at Dec. 31, 2020 19,492,718        
Increase (Decrease) in Stockholders' Equity          
Stock-based compensation   2,457     2,457
Exercise of common stock options and vesting of performance and restricted stock units $ 1 1,295     1,296
Exercise of common stock options and vesting of performance and restricted stock units (in shares) 167,375        
Taxes paid for net share settlement of performance and restricted stock units   (1,115)     (1,115)
Taxes paid for net share settlement of performance and restricted stock units (in shares) (20,980)        
Comprehensive loss for the period     (2,266)   (2,266)
Balances at the end at Mar. 31, 2021 $ 20 $ 107,312 $ 17,790   $ 125,122
Balances at the end (in shares) at Mar. 31, 2021 19,639,113