Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2012

Earnings Per Share, Basic and Diluted [Abstract]

Schedule of Calculation of Numerator and Denominator in Net Income Per Common Share [Table Text Block]

The following table presents the calculation of the numerator and denominator for both basic and diluted net income per common share:

	Three Months Ended
	June 30,
	2012				2011
	Income		Weighted-Average Common Shares		Income		Weighted- Average Common Shares
Net income	$	18,847	54,353,811		$	13,594	40,333,269
Effect of dilutive stock options	—		—		—		1,138
Diluted	$	18,847	54,353,811		$	13,594	40,334,407
Net income per common share:
Basic			$	0.35			$	0.34
Diluted (1)			$	0.35			$	0.34

(1) For the three months ended June 30, 2012 and June 30, 2011, the calculation of diluted net income per common shareexcludes the effect of 15,000 unexercised stock option awards because their inclusion would have been anti-dilutive.

	Six Months Ended
	June 30,
	2012				2011
	Income		Weighted-Average Common Shares		Income		Weighted- Average Common Shares
Net income	$	35,323	51,930,581		$	23,874	36,762,811
Effect of dilutive stock options	—		—		—		2,209
Diluted	$	35,323	51,930,581		$	23,874	36,765,020
Net income per common share:
Basic			$	0.68			$	0.65
Diluted (1)			$	0.68			$	0.65

(1) For the six months ended June 30, 2012, the calculation of diluted net income per common shareexcludes the effect of 15,000 unexercised stock option awards because their inclusion would have been anti-dilutive.