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Consolidated Statements of Shareholders' Equity - USD ($)
$ in Thousands
Preferred Stock [Member]
Common Stock [Member]
Retained Earnings [Member]
Stock in Directors' Rabbi Trust [Member]
Directors' Deferred Fees Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Total
Beginning balance at Dec. 31, 2015 $ 7,287 $ 133,393 $ 205,060 $ (3,550) $ 342,190
Beginning balance, shares at Dec. 31, 2015   19,748          
Net income     19,154       19,154
Cash dividends declared ($0.24 per common share)     (4,806)       (4,806)
Preferred stock dividends     (175)       (175)
Equity issued pursuant to acquisitions   $ 5,509         5,509
Equity issued pursuant to acquisitions, shares   279          
Stock option exercises   $ 375         375
Stock option exercises, shares   23          
Stock-based compensation   $ 702         702
Stock-based compensation, shares   69          
Other comprehensive income (loss)           1,999 1,999
Ending balance at Sep. 30, 2016 7,287 $ 139,979 219,233 (1,551) $ 364,948
Ending balance, shares at Sep. 30, 2016   20,119         20,119,411
Beginning balance at Dec. 31, 2016 $ 147,287 225,921 (5,107) $ 368,101
Beginning balance, shares at Dec. 31, 2016   20,845         20,844,505
Net income     31,795       $ 31,795
Cash dividends declared ($0.24 per common share)     (5,926)       (5,926)
Equity issued pursuant to acquisitions   $ 114,893   (7,688) 7,688   114,893
Equity issued pursuant to acquisitions, shares   3,813          
Payment of deferred fees       4,117 (4,117)  
Stock option exercises   $ 287         287
Stock option exercises, shares   16          
Stock-based compensation   $ 1,026         1,026
Stock-based compensation, shares   50          
Other comprehensive income (loss)           2,325 2,325
Ending balance at Sep. 30, 2017 $ 263,493 $ 251,790 $ (3,571) $ 3,571 $ (2,782) $ 512,501
Ending balance, shares at Sep. 30, 2017   24,724         24,723,929