Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Capital in Excess of Par Value [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Beginning Balance at Dec. 31, 2014 $ 173,780 $ 7,872 $ 57,650 $ 104,594 $ 3,664
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 10,432     10,432  
Other comprehensive income (loss) (378)       (378)
Issuance of common stock 20,483 826 19,657    
Stock repurchased (2,808) (122) (2,686)    
Stock options exercised 399 22 377    
Equity based compensation 539 13 526    
Cash dividends paid (5,996)     (5,996)  
Ending Balance at Sep. 30, 2015 196,451 8,611 75,524 109,030 3,286
Beginning Balance at Jun. 30, 2015         2,402
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 4,037        
Other comprehensive income (loss) 884        
Ending Balance at Sep. 30, 2015 196,451 8,611 75,524 109,030 3,286
Beginning Balance at Dec. 31, 2015 197,835 [1] 8,605 75,375 111,565 2,290
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 12,179     12,179  
Other comprehensive income (loss) 468       468
Stock repurchased (1,292) (51) (1,241)    
Stock options exercised 101 4 97    
Vesting of restricted stock   5 (5)    
Equity based compensation 623 10 613    
Cash dividends paid (6,201)     (6,201)  
Ending Balance at Sep. 30, 2016 203,713 8,573 74,839 117,543 2,758
Beginning Balance at Jun. 30, 2016         3,731
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Net income 3,963        
Other comprehensive income (loss) (973)        
Ending Balance at Sep. 30, 2016 $ 203,713 $ 8,573 $ 74,839 $ 117,543 $ 2,758
[1] Derived from audited consolidated financial statements.