Earnings Per Share (EPS) Earnings Per Share (EPS) (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

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

The following is a reconciliation of the weighted average basic number of common shares outstanding to the diluted number of common and common stock equivalent shares outstanding and the calculation of earnings per share using the two-class method:

	Three Months Ended						Six Months Ended
	June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
Net income	$	20,628		$	11,567		$	34,813		$	23,970
Less: earnings attributable to unvested shares	(43		)	(18		)	(73		)	(38		)
Net income available to participating common shareholders	$	20,585		$	11,549		$	34,740		$	23,932
Weighted average number of participating common and potential common shares outstanding:
Basic number of participating common shares outstanding	21,876,265			21,925,207			21,870,343			21,925,057
Dilutive effect of stock equivalents	375,151			394,965			373,421			397,504
Diluted number of weighted average participating common shares outstanding	22,251,416			22,320,172			22,243,764			22,322,561
Earnings per participating common share:
Earnings per participating common share—Basic	$	0.94		$	0.53		$	1.59		$	1.09
Earnings per participating common share—Diluted	$	0.93		$	0.52		$	1.56		$	1.07
Total outstanding options, performance share awards and unvested restricted stock not included in the calculation of diluted earnings per share as the effect would be anti-dilutive	383,971			411,832			385,701			409,293