Earnings Per Share (Tables)

9 Months Ended

Mar. 31, 2012

Earnings Per Share [Abstract]

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

	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2012		2011		2012		2011
Net Income	$	36,657	$	33,081	$	111,657	$	100,897
Common share information:
Weighted average shares outstanding for basic earnings per share	86,824		86,218		86,600		85,819
Dilutive effect of stock options and restricted stock	768		754		766		734
Weighted average shares outstanding for diluted earnings per share	87,592		86,972		87,366		86,553
Basic earnings per share	$	0.42	$	0.38	$	1.29	$	1.18
Diluted earnings per share	$	0.42	$	0.38	$	1.28	$	1.17