Note 11 - Long-Term Debt (Details) (USD $)	9 Months Ended	12 Months Ended			12 Months Ended			12 Months Ended						4 Months Ended			12 Months Ended				0 Months Ended	3 Months Ended	12 Months Ended		12 Months Ended
	May 31, 2012	May 31, 2013	Sep. 30, 2012	Aug. 19, 2011	May 31, 2013 Included in Loss on Extinguishment of Debt [Member]	Jan. 25, 2013 Amendment Adjustment [Member]	Feb. 19, 2013 Associated with Amend. No. 3 and 4 [Member] Term B2 Loans [Member]	May 31, 2013 Base Rate Borrowing [Member] Federal Funds Effective Rate [Member]	May 31, 2013 Base Rate Borrowing [Member] Revolving Facility [Member]	May 31, 2013 LIBOR Rate [Member] Revolving Facility [Member]	May 31, 2013 LIBOR Rate [Member]	May 31, 2013 Associated with Amendment No. 3 [Member]	Aug. 19, 2011 Notes Payable, Other Payables [Member]	Sep. 30, 2012 Term B1 Loans [Member]	Aug. 21, 2012 Term B1 Loans [Member]	May 31, 2013 Additional Principal Due [Member]	May 31, 2013 Federal Funds Effective Rate [Member]	May 31, 2013 LIBOR Rate [Member] Original Term Loan [Member]	May 31, 2013 LIBOR Rate [Member]	May 31, 2013 Base Rate Borrowing [Member] Original Term Loan [Member]	Feb. 19, 2013 Term B2 Loans [Member]	Feb. 19, 2013 Term B2 Loans [Member]	May 31, 2013 Term B2 Loans [Member]	Mar. 22, 2013 Term B2 Loans [Member]	May 31, 2013 Original Term Loan [Member]	May 31, 2013 Minimum [Member] Original Term Loan [Member]	May 31, 2013 Minimum [Member]
Note 11 - Long-Term Debt (Details) [Line Items]
Gains (Losses) on Extinguishment of Debt		$ (9,111,000)			$ (3,486,000)									$ (6,700,000)								$ 2,400,000
Secured Long-term Debt, Noncurrent				615,000,000											610,400,000
Line of Credit Facility, Maximum Borrowing Capacity		100,000,000		100,000,000		50,000,000															613,300,000	613,300,000
Letters of Credit Outstanding, Amount				25,000,000
Deferred Finance Costs, Current, Net			4,000,000				7,300,000							2,500,000							1,700,000	1,700,000		1,600,000
Debt Instrument, Unamortized Discount														2,700,000							700,000	700,000
Proceeds from Lines of Credit	11,000,000	49,000,000																			6,000,000
Debt Instrument, Face Amount													400,000,000			2,000,000								50,000,000
Line of Credit Facility, Periodic Payment																							$ 1,700,000
Debt Instrument, Basis Spread on Variable Rate								4.75%		5.75%	5.75%						0.50%	4.50%	1.00%	3.50%					4.50%	1.25%
Line of Credit Facility, Interest Rate at Period End		5.00%																							5.75%		1.25%
Line of Credit Facility, Interest Rate Description		The applicable margin for borrowings under the Revolving Facility is subject to a 0.25% step-down, when the Company's senior secured net leverage ratio at the end of a fiscal quarter is less than or equal to 3:00 to 1:00.							2.75%	3.75%		The Company is required to comply on a quarterly basis with a maximum senior secured net leverage ratio covenant of 5.25 to 1.00 only if there are amounts outstanding under the Revolving Facility.					2.75%		3.75%
Debt Instrument, Interest Rate, Stated Percentage				11.125%							1.50%														7.25%