Stock Based Compensation Narrative (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expense for stock-based compensation	$ 8,615	$ 6,950	$ 4,723
Restricted Stock Plan Expense	7,962	6,364	4,209
Share-based Compensation Arrangement by Share-based Payment Award, Description	Oct. 29, 1996
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	700
Employee Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description	Sep. 23, 2005
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	6 months
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights	1
Share-based Compensation Arrangement by Share-based Payment Award, Termination Period After Termination of Employment	0 years 30 days
Share-based Compensation Arrangement by Share-based Payment Award, Termination Period After Retirement	0 years 3 months 0 days
Share-based Compensation Arrangement by Share-based Payment Award, Termination Period After Death	1 year
Share-based Compensation Arrangement by Share-based Payment Award, Termination Date	Oct. 29, 2006
Compensation expense yet to be recognized	0
Weighted average remaining contractual term	4 years 11 days
Tax Benefit from Stock Options Exercised	3,632	3,631	2,298
Intrinsic value of stock options exercised	8,254	9,654	6,342
Share-based Compensation Arrangement by Share-based Payment Award, Award Requisite Service Period	4 years
Share-based Compensation Arrangement by Share-based Payment Award, Percent Vesting After One Year	25.00%
Share-based Compensation Arrangement by Share-based Payment Award, Percent Vesting After Two Years	50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Percent Vesting After Three Years	75.00%
Share-based Compensation Arrangement by Share-based Payment Award, Termination After Grant Date	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Per Director	100
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description	Aug. 20, 2010
Compensation expense yet to be recognized	7,728
Compensation expense yet to be recognized, period for recognition	1 year 29 days
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Description	Nov. 01, 2005
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	7 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	3,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period, Lower	3 years
Compensation expense yet to be recognized	$ 2,071
Compensation expense yet to be recognized, period for recognition	0 years 313 days