FINANCING ARRANGEMENTS (Details) (USD $)			12 Months Ended					1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended		1 Months Ended	12 Months Ended			12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Senior term notes	Jun. 30, 2011 Senior term notes	Jun. 30, 2012 Private Shelf Agreement	Apr. 30, 2012 Private Shelf Agreement	Jun. 30, 2011 Private Shelf Agreement	Jul. 31, 2009 Convertible senior notes Y	Jun. 30, 2012 Convertible senior notes Y	Jun. 30, 2011 Convertible senior notes	Jun. 30, 2011 Revolving credit facility	Jun. 30, 2011 Revolving credit facility	Jun. 30, 2012 Revolving credit facility	Sep. 30, 2011 Equipment and leasehold notes payable	Jun. 30, 2012 Equipment and leasehold notes payable	Jun. 30, 2011 Equipment and leasehold notes payable	Sep. 29, 2011 Equipment and leasehold notes payable	Jun. 30, 2012 Other notes payable	Jun. 30, 2011 Other notes payable
Long-term debt
Interest rate percentage, minimum			6.69%	6.69%											4.90%	8.80%		5.75%	5.75%
Interest rate percentage, maximum			8.50%	8.50%											8.75%	9.14%		8.00%	8.00%
Interest rate percentage								5.00%	5.00%	5.00%							4.90%
Net carrying amount of long-term debt	$ 287,674,000	$ 313,411,000	$ 111,429,000	$ 133,571,000	$ 111,400,000		$ 133,600,000		$ 161,134,000	$ 156,248,000					$ 14,780,000	$ 22,273,000		$ 331,000	$ 1,319,000
Less current portion	(28,937,000)	(32,252,000)			22,100,000		22,100,000
Long-term portion	258,737,000	281,159,000
Aggregate maturities of long-term debt, including capital lease obligations
Capital lease obligations	14,800,000
Fiscal year, 2013	28,937,000
Fiscal year, 2014	24,918,000
Fiscal year, 2015	180,245,000
Fiscal year, 2016	17,860,000
Fiscal year, 2017	17,857,000
Thereafter	17,857,000
Net carrying amount of long-term debt	287,674,000	313,411,000	111,429,000	133,571,000	111,400,000		133,600,000		161,134,000	156,248,000					14,780,000	22,273,000		331,000	1,319,000
Long-term debt, additional disclosures
Minimum net worth covenant on long-term debt						800,000,000					800,000,000	800,000,000
Minimum net worth covenant on long-term debt after amendment						850,000,000					850,000,000	850,000,000
Principal amount of long-term debt								172,500,000	172,500,000	172,500,000							20,500,000
Long-term debt conversion ratio								64.6726	65.1432
Principal amount applied to conversion ratio								1,000	1,000
Long-term debt conversion price (in dollars per share)								$ 15.46	$ 15.35
Convertible long-term debt amount allocated to equity								24,700,000
Fair value of long-term debt								147,800,000
Effective interest rate on the convertible debt (as a percent)								8.90%
Debt discount amortization period (in years)									5
Unamortized debt discount								(24,700,000)	(11,366,000)	(16,252,000)
Interest cost related to contractual interest coupon									8,625,000	8,625,000
Interest cost related to amortization of the discount									4,886,000	4,488,000
Total interest cost									13,511,000	13,113,000
Revolving credit facility maximum borrowing capacity											400,000,000	400,000,000
Debt instrument term											5 years			3 years
Variable interest rate basis												LIBOR
Maximum borrowing capacity, optional expansion											200,000,000
Indebtedness related to capital leases, maximum						50,000,000					50,000,000	50,000,000
Threshold default of other debt to trigger event of default											10,000,000
Outstanding standby letters of credit											26,000,000	26,000,000	26,100,000
Revolving credit facility remaining borrowing capacity											$ 374,000,000	$ 374,000,000	$ 373,900,000
Capital lease amortization rate (as a percent)														9.20%