Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2013

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

			Three Months Ended				Six Months Ended
			June 30,				June 30,
			2013		2012		2013		2012
Weighted average number of shares outstanding — basic			24,042,947		23,293,228		23,959,567		23,205,628
Effect of dilutive share based awards			589,909		725,888		487,227		728,032
Weighted average number of common shares outstanding — diluted			24,632,856		24,019,116		24,446,794		23,933,660
Earnings per share:
	Basic	$	0.26	$	0.23	$	0.44	$	0.40
	Diluted	$	0.25	$	0.23	$	0.43	$	0.39