Earnings Per Share (Tables)

9 Months Ended

Mar. 31, 2013

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,
	2013		2012		2013		2012
Net Income	$	45,996	$	36,657	$	128,976	$	111,657
Common share information:
Weighted average shares outstanding for basic earnings per share	86,120		86,824		86,104		86,600
Dilutive effect of stock options and restricted stock	585		768		546		766
Weighted average shares outstanding for diluted earnings per share	86,705		87,592		86,650		87,366
Basic earnings per share	$	0.53	$	0.42	$	1.50	$	1.29
Diluted earnings per share	$	0.53	$	0.42	$	1.49	$	1.28