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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss), net
Total
Balance at the beginning of the period at Dec. 31, 2017 $ 109 $ 74,008 $ 25,859 $ (1,693) $ 98,283
Balance at the beginning of the period (in shares) at Dec. 31, 2017 10,869        
Increase (Decrease) in Stockholders' Equity          
Net income     6,074   6,074
Other comprehensive income (loss), net of tax       (1,796) (1,796)
Common stock issuance for options exercised $ 2 1,053     1,055
Common stock issuance for options exercised (in shares) 207        
Stock-based compensation expense   350     350
Balance at the end of the period at Jun. 30, 2018 $ 111 75,411 31,933 (3,489) 103,966
Balance at the end of the period (in shares) at Jun. 30, 2018 11,076        
Balance at the beginning of the period at Mar. 31, 2018 $ 110 74,778 28,856 (3,092) 100,652
Balance at the beginning of the period (in shares) at Mar. 31, 2018 10,981        
Increase (Decrease) in Stockholders' Equity          
Net income     3,077   3,077
Other comprehensive income (loss), net of tax       (397) (397)
Common stock issuance for options exercised $ 1 455     456
Common stock issuance for options exercised (in shares) 95        
Stock-based compensation expense   178     178
Balance at the end of the period at Jun. 30, 2018 $ 111 75,411 31,933 (3,489) 103,966
Balance at the end of the period (in shares) at Jun. 30, 2018 11,076        
Balance at the beginning of the period at Dec. 31, 2018 $ 137 123,882 36,728 (2,411) 158,336 [1]
Balance at the beginning of the period (in shares) at Dec. 31, 2018 13,713        
Increase (Decrease) in Stockholders' Equity          
Net income     8,011   8,011
Adoption of lease accounting standard     (86)   (86)
Other comprehensive income (loss), net of tax       2,762 2,762
Common stock issuance for options exercised $ 1 867     868
Common stock issuance for options exercised (in shares) 127        
Stock-based compensation expense   272     272
Balance at the end of the period at Jun. 30, 2019 $ 138 125,021 44,653 351 170,163
Balance at the end of the period (in shares) at Jun. 30, 2019 13,840        
Balance at the beginning of the period at Mar. 31, 2019 $ 138 124,318 40,568 (1,031) 163,993
Balance at the beginning of the period (in shares) at Mar. 31, 2019 13,755        
Increase (Decrease) in Stockholders' Equity          
Net income     4,085   4,085
Other comprehensive income (loss), net of tax       1,382 1,382
Common stock issuance for options exercised   596     596
Common stock issuance for options exercised (in shares) 85        
Stock-based compensation expense   107     107
Balance at the end of the period at Jun. 30, 2019 $ 138 $ 125,021 $ 44,653 $ 351 $ 170,163
Balance at the end of the period (in shares) at Jun. 30, 2019 13,840        
[1] Derived from audited consolidated financial statements.