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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Common Stock
Additional Paid-in Capital
Retained Earnings
Total
Beginning balance at Dec. 31, 2016 $ 111 $ 35,453 $ 152,810 $ 188,374
Beginning balance, shares at Dec. 31, 2016 11,093,489      
Restricted stock grants, net of forfeitures $ 1 (1)    
Restricted stock grants, net of forfeitures, shares 73,936      
Stock-based compensation   5,654   5,654
Common stock dividends     (5,707) (5,707)
Net income     20,880 20,880
Ending balance at Jun. 30, 2017 $ 112 41,106 167,983 209,201
Ending balance, shares at Jun. 30, 2017 11,167,425      
Impact of adoption of new accounting standards | Accounting Standards Update 2014-09     (171) (171)
Beginning balance at Dec. 31, 2017 $ 112 47,079 162,006 209,197
Beginning balance, shares at Dec. 31, 2017 11,167,425      
Restricted stock grants, net of forfeitures $ 1 (1)    
Restricted stock grants, net of forfeitures, shares 139,102      
Stock-based compensation   5,937   5,937
Common stock dividends     (5,778) (5,778)
Net income     14,655 14,655
Ending balance at Jun. 30, 2018 $ 113 $ 53,015 $ 170,712 $ 223,840
Ending balance, shares at Jun. 30, 2018 11,306,527