XML 23 R6.htm IDEA: XBRL DOCUMENT v3.8.0.1
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Noncontrolling Interest [Member]
Balance, value at Dec. 31, 2014 $ 360,155 $ 21 $ 76,844 $ 280,773 $ 2,517 $ 0
Balance, shares at Dec. 31, 2014   20,286,840        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 37,882 $ 0 0 37,882 0 0
Cumulative effect of change in accounting principle, net of tax effect of $300 (436)     (436)    
Unrealized loss on investment, net of tax effect (206) 0 0 0 (206) 0
Reclassification adjustment for gain realized on investment, net of tax 0          
Share-based compensation 1,489 0 1,603 (114) 0  
Issuance of restricted and deferred stock units, value (111) $ 0 (111) 0 0 0
Issuance of restricted and deferred stock units, shares   61,791        
Employee stock purchase plan, value $ 895 $ 0 895 0 0 0
Employee stock purchase plan, shares 33,318 33,318        
Dividends $ (15,885) $ 0 0 (15,885) 0  
Balance, value at Dec. 31, 2015 383,783 $ 21 79,231 302,220 2,311 0
Balance, shares at Dec. 31, 2015   20,381,949        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 52,839 $ 0 0 52,839 0 0
Unrealized loss on investment, net of tax effect 955 0 0 0 955 0
Reclassification adjustment for gain realized on investment, net of tax (1,742) 0 0 0 (1,742)  
Share-based compensation 1,577 0 1,691 (114) 0  
Issuance of restricted and deferred stock units, value (161) $ 0 (161) 0 0 0
Issuance of restricted and deferred stock units, shares   44,062        
Employee stock purchase plan, value $ 954 $ 0 954 0 0 0
Employee stock purchase plan, shares 30,214 30,214        
Dividends $ (16,559) $ 0 0 (16,559) 0 0
Balance, value at Dec. 31, 2016 $ 421,646 $ 21 81,715 338,386 1,524 0
Balance, shares at Dec. 31, 2016 20,456,225 20,456,225        
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income $ 61,100 $ 0 0 59,204 0 1,896
Distribution to noncontrolling interest (1,896)         (1,896)
Unrealized loss on investment, net of tax effect 679 0 0 0 679 0
Reclassification adjustment for gain realized on investment, net of tax 0          
Share-based compensation 2,504 0 2,643 (139) 0  
Issuance of restricted and deferred stock units, value (707) $ 0 (707) 0 0 0
Issuance of restricted and deferred stock units, shares   36,888        
Employee stock purchase plan, value $ 1,215 $ 0 1,215 0 0 0
Employee stock purchase plan, shares 27,743 27,743        
Dividends $ (21,332) $ 0 0 (21,332) 0 0
Balance, value at Dec. 31, 2017 $ 463,209 $ 21 $ 84,866 $ 376,119 $ 2,203 $ 0
Balance, shares at Dec. 31, 2017 20,520,856 20,520,856