Consolidated Statement Of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Jun. 30, 2012	$ 964,602	$ 462	$ 616,197	$ 375,111	$ (21,785)	$ (5,383)
Balance, shares at Jun. 30, 2012	46,155,912	46,155,912			1,202,804
Net income	88,723			88,723
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(19,385)					(19,385)
Issuance of common stock pursuant to compensation plans	13,722	7	13,715
Issuance of common stock pursuant to compensation plans, shares		734,228
Stock Issued During Period, Value, Acquisitions	57,586	10	57,576
Stock Issued During Period, Shares, Acquisitions		1,010,693
Stock based compensation income tax effects	9,180		9,180
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans	(8,429)				8,429
Shares withheld for payment of employee payroll taxes due on shares issued under stock based compensation plans, shares					133,077
Stock based compensation charge	9,837		9,837
Balance at Mar. 31, 2013	$ 1,115,836	$ 479	$ 706,505	$ 463,834	$ (30,214)	$ (24,768)
Balance, shares at Mar. 31, 2013	47,900,833	47,900,833			1,335,881