Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]

A reconciliation of the numerator (net income) and denominator (weighted average number of shares outstanding of the basic and diluted earnings per share ("EPS")) for the three months and six months ended June 30, 2013 and June 30, 2012 is as follows (in thousands, except per share data):

	Three months ended June 30, 2013
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	19,138	84,789	$	0.23
Effect of restricted stock	—		250
Diluted EPS	$	19,138	85,039	$	0.23

	Three months ended June 30, 2012
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	18,227	86,451	$	0.21
Effect of restricted stock	—		328
Diluted EPS	$	18,227	86,779	$	0.21

	Six months ended June, 2013
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	38,874		84,780	0.46
Effect of restricted stock	—		262
Diluted EPS	$	38,874	85,042	$	0.46

	Six months ended June, 2012
	Net Income (numerator)		Shares (denominator)	Per Share Amount
Basic EPS	$	34,816	86,463	$	0.40
Effect of restricted stock	—		339
Diluted EPS	$	34,816	86,802	$	0.40