Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statements of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	$ (271)	$ (147)	$ (766)	$ (1,434)
Other Comprehensive Income (Loss), Reclassification Adjustment for Derivative Interest Included in Net Income, Tax	$ 1,166	$ 1,130	$ 2,316	$ 2,173