Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share (Details)

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Net Income Per Share (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Net Income per Share        
Net income attributable to common shareholders $ 1,017 $ 4,850 $ 13,916 $ 15,766
Basic weighted-average shares outstanding 17,310 16,068 16,563 15,930
Basic net per common share:        
Net Income per common share attributable to shareholders (in dollars per share) $ 0.06 $ 0.30 $ 0.84 $ 0.99
Diluted weighted average shares outstanding        
Basic weighted-average shares outstanding 17,310 16,068 16,563 15,930
Weighted average stock options outstanding (in shares) 502 422 505 397
Diluted weighted-average shares outstanding 17,812 16,490 17,068 16,327
Diluted per common share:        
Net Income per common share attributable to shareholders (in dollars per share) $ 0.06 $ 0.29 $ 0.82 $ 0.97
Potentially dilutive shares excluded from diluted per share amounts:        
Stock options (in shares) 133 140 133 140
Potentially anti-dilutive shares excluded from diluted per share amounts:        
Stock options (in shares) 210 20 210 45