Quarterly report pursuant to Section 13 or 15(d)

Net Income per Share (Details)

v2.4.0.8
Net Income per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Computation of basic and diluted net income per share [Abstract]        
Net income $ 8,763 $ 6,977 $ 25,282 $ 29,260
Basic - weighted average common shares (in shares) 15,816 16,103 15,545 16,273
Diluted effect of common stock equivalents (in shares) 573 572 639 742
Diluted - weighted average common shares (in shares) 16,389 16,675 16,184 17,015
Earnings per share [Abstract]        
Basic (in dollars per share) $ 0.55 $ 0.43 $ 1.63 $ 1.80
Diluted (in dollars per share) $ 0.53 $ 0.42 $ 1.56 $ 1.72
Stock Options [Member]
       
Anti-dilutive shares excluded from computation of diluted shares [Abstract]        
Anti-dilutive stock option shares (in shares) 43 174 80 108