INCOME TAXES (Details) (USD $)	1 Months Ended		3 Months Ended								12 Months Ended
	Oct. 31, 2010	Jan. 31, 2009	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2009	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Consolidated income from continuing operations before taxes and noncontrolling interest
United States											$ 131,668,000	$ 160,265,000	$ 169,756,000
Foreign											11,725,000	10,553,000	15,204,000
Income from continuing operations before income taxes			38,411,000	37,429,000	33,616,000	33,937,000	44,334,000	31,992,000	48,629,000	45,863,000	143,393,000	170,818,000	184,960,000
Current income tax expense from Continuing operations
Federal											12,614,000	59,626,000	26,956,000
State											5,585,000	5,928,000	4,820,000
Foreign											3,245,000	5,057,000	3,711,000
Total											21,444,000	70,611,000	35,487,000
Deferred income tax expense from Continuing operations
Federal											23,984,000	(9,261,000)	26,458,000
State											(919,000)	(796,000)	2,770,000
Foreign											673,000	167,000	66,000
Total											23,738,000	(9,890,000)	29,294,000
Income tax expense			12,899,000	13,651,000	6,347,000	12,285,000	16,748,000	11,262,000	16,456,000	16,255,000	45,182,000	60,721,000	64,781,000
Reconciliation of the Company's effective income tax rate
U.S. federal statutory income tax rate (as a percent)											35.00%	35.00%	35.00%
Change in income tax contingencies (as a percent)											(2.50%)	(0.90%)	1.20%
State income taxes, net of federal benefit (as a percent)											2.00%	2.00%	3.50%
Foreign earnings subject to U.S. tax (as a percent)											2.90%	1.20%	2.20%
Change in valuation allowance (as a percent)											(0.20%)	(0.30%)	(0.20%)
Tax credits (as a percent)											(4.70%)	(1.70%)	(6.70%)
Domestic production activities deduction (as a percent)											(1.50%)	(0.40%)	(1.90%)
Other, net (as a percent)											0.50%	0.60%	1.90%
Effective income tax rate (as a percent)											31.50%	35.50%	35.00%
Deferred tax assets:
Share-based compensation			11,405,000				13,621,000				11,405,000	13,621,000
Deferred revenue, net of deferred costs			9,326,000				10,124,000				9,326,000	10,124,000
Accruals not currently deductible for tax purposes			13,243,000				13,516,000				13,243,000	13,516,000
Property and equipment							7,663,000					7,663,000
Inventory			4,640,000				3,985,000				4,640,000	3,985,000
Net operating loss carryforwards			3,466,000				3,800,000				3,466,000	3,800,000
Intangible assets			4,029,000				1,563,000				4,029,000	1,563,000
Allowance for doubtful accounts			4,607,000				4,428,000				4,607,000	4,428,000
Foreign tax credit carryforwards			2,154,000				1,902,000				2,154,000	1,902,000
Other tax credits			2,086,000				1,448,000				2,086,000	1,448,000
Other			1,838,000				4,625,000				1,838,000	4,625,000
Total gross deferred tax assets			56,794,000				66,675,000				56,794,000	66,675,000
Less: Valuation allowance			(1,186,000)				(1,526,000)				(1,186,000)	(1,526,000)
Deferred tax assets			55,608,000				65,149,000				55,608,000	65,149,000
Deferred tax liabilities:
Property and equipment			12,734,000								12,734,000
Other			2,293,000				100,000				2,293,000	100,000
Total gross deferred tax liabilities			15,027,000				100,000				15,027,000	100,000
Net deferred tax assets			40,581,000				65,049,000				40,581,000	65,049,000
Deferred tax liabilities, current			439,000				362,000				439,000	362,000
Deferred tax liabilities, noncurrent			418,000				542,000				418,000	542,000
Undistributed earnings from foreign subsidiaries			9,700,000				15,400,000				9,700,000	15,400,000
Net operating loss carryforwards for U.S. federal income tax purposes			5,600,000								5,600,000
Increase to stockholder's equity for certain tax benefits realized from employee share-based compensation											8,700,000	16,700,000
Portion of unrecognized tax benefits, if recognized, would impact entity's effective tax rate			8,200,000				10,200,000				8,200,000	10,200,000
Accrued interest and penalties related to unrecognized tax benefit			1,300,000				3,700,000				1,300,000	3,700,000
Decrease in accrued interest and penalties during the period related to unrecognized tax benefits											2,500,000	1,900,000
Changes to the balance of unrecognized tax benefits
Balance, beginning of year						11,637,000				19,049,000	11,637,000	19,049,000
Additions based on tax provisions related to current year											1,035,000	463,000
Additions for tax positions of prior years											2,812,000	330,000
Reductions for tax positions of prior years											(6,687,000)	(2,485,000)
Settlements												(5,395,000)
Lapse of statute of limitations											(541,000)	(213,000)
Foreign currency translation adjustment											108,000	(112,000)
Balance, end of year			8,364,000				11,637,000				8,364,000	11,637,000	19,049,000
Tax paid / (refund received) relating to federal income tax returns examination for the year 2003 through 2005	(2,300,000)	3,400,000
Interest paid / (refund received) relating to federal income tax returns examination for the year 2003 through 2005	(600,000)	1,200,000
Decrease in unrecognized tax benefits, is reasonably possible, estimated range, maximum			$ 300,000								$ 300,000