Note 21 - Condensed Consolidating Financial Information of Guarantor Subsidiaries (Details) - Condensed Consolidating Statements of Operations (USD $) In Thousands, unless otherwise specified	3 Months Ended									5 Months Ended		9 Months Ended	12 Months Ended
	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	Aug. 19, 2011	May 31, 2014	May 31, 2013	May 31, 2012	May 31, 2014	May 31, 2013
Condensed Income Statements, Captions [Line Items]
Net Sales	$ 100,830	$ 90,979	$ 100,203	$ 96,044	$ 94,386	$ 86,192	$ 82,056	$ 85,154	$ 74,910			$ 261,814	$ 388,056	$ 347,788
COST OF SALES (exclusive of amortization shown separately below)									22,955			105,698	139,634	120,027
Gross Margin	64,288	58,620	65,521	59,993	58,623	56,195	54,890	58,053	51,955			156,116	248,422	227,761
OPERATING EXPENSES:
Research and development									4,895			13,929	29,070	21,313
Selling and marketing									10,510			32,913	59,057	50,129
Distribution									3,952			14,333	20,165	18,718
General and administrative									38,175			38,316	41,603	42,801
Amortization of intangibles									931			39,224	52,965	50,765
Certain litigation expenses												22,000
Acquisition-related items													(4,638)	2,616
Impairment Loss													160,150	3,500
Total operating expenses									58,463			160,715	358,372	191,017
Loss on disposition of fixed assets														1,175
(LOSS) INCOME FROM OPERATIONS	(148,804)	8,834	20,030	9,990	1,659	12,844	8,299	13,942	(6,508)			(4,599)	(109,950)	36,744
NON-OPERATING (EXPENSE) INCOME:
Interest income									142			7	36	28
Interest expense										(88,304)	(90,830)	(77,048)	(88,304)	(90,830)
Loss on extinguishment of debt						2,400		6,700						(9,111)
Other, net									2,673			447	45	(539)
Total non-operating (expense) income									2,815			(76,594)	(88,223)	(100,452)
(Loss) Income Before Income Taxes									(3,693)			(81,193)	(198,173)	(63,708)
(Benefit) Provision for Income Taxes									2,681			(31,546)	(15,916)	(24,566)
Net (Loss) Income Before Earnings of Consolidated Subsidiaries									(6,374)			(49,647)	(182,257)	(39,142)
Net (Loss) Income	(166,355)	(7,355)	(787)	(7,760)	(12,195)	(5,913)	(10,399)	(10,635)	(6,374)			(49,647)	(182,257)	(39,142)
Consolidation, Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net Sales									(7,781)			(35,178)	(68,205)	(49,188)
COST OF SALES (exclusive of amortization shown separately below)									(7,781)			(35,178)	(68,205)	(49,188)
NON-OPERATING (EXPENSE) INCOME:
Interest income									(21)			(82)	(56)	(69)
Interest expense									21			82	56	69
Net (Loss) Income of consolidated subsidiaries									(1,392)			4,369	(334)	2,360
Net (Loss) Income									(1,392)			4,369	(334)	2,360
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Net Sales									55,063			195,377	251,079	256,676
COST OF SALES (exclusive of amortization shown separately below)									17,070			73,109	82,485	84,320
Gross Margin									37,993			122,268	168,594	172,356
OPERATING EXPENSES:
Research and development									2,390			7,724	13,514	13,428
Selling and marketing									5,321			17,868	24,701	25,611
Distribution									2,331			8,697	11,199	11,599
General and administrative									33,903			26,850	25,412	26,143
Amortization of intangibles									117			37,173	47,883	47,820
Certain litigation expenses												22,000
Acquisition-related items													(4,638)	2,616
Impairment Loss													160,000	3,500
Total operating expenses									44,062			120,312	278,071	131,892
Loss on disposition of fixed assets														1,175
(LOSS) INCOME FROM OPERATIONS									(6,069)			1,956	(109,477)	40,464
NON-OPERATING (EXPENSE) INCOME:
Interest income									46
Interest expense												(77,066)	(88,314)	(90,875)
Loss on extinguishment of debt														(9,111)
Other, net									(246)			406	819	(1,043)
Total non-operating (expense) income									(200)			(76,660)	(87,495)	(101,029)
(Loss) Income Before Income Taxes									(6,269)			(74,704)	(196,972)	(60,565)
(Benefit) Provision for Income Taxes									1,497			(29,426)	(14,381)	(23,783)
Net (Loss) Income Before Earnings of Consolidated Subsidiaries									(7,766)			(45,278)	(182,591)	(36,782)
Net (Loss) Income of consolidated subsidiaries									1,392			(4,369)	334	(2,360)
Net (Loss) Income									(6,374)			(49,647)	(182,257)	(39,142)
Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net Sales									980			4,087	55,457	15,835
COST OF SALES (exclusive of amortization shown separately below)									722			3,844	32,936	11,056
Gross Margin									258			243	22,521	4,779
OPERATING EXPENSES:
Research and development									2,471			6,113	15,180	7,850
Selling and marketing									568			1,654	9,188	3,632
Distribution									34			137	1,484	421
General and administrative									657			1,682	7,362	6,673
Amortization of intangibles									757			161	2,700	663
Impairment Loss													150
Total operating expenses									4,487			9,747	36,064	19,239
(LOSS) INCOME FROM OPERATIONS									(4,229)			(9,504)	(13,543)	(14,460)
NON-OPERATING (EXPENSE) INCOME:
Interest income													8
Interest expense														(2)
Other, net									14				153	(84)
Total non-operating (expense) income									14				161	(86)
(Loss) Income Before Income Taxes									(4,215)			(9,504)	(13,382)	(14,546)
(Benefit) Provision for Income Taxes									(1,598)			(3,275)	(5,060)	(4,773)
Net (Loss) Income Before Earnings of Consolidated Subsidiaries									(2,617)			(6,229)	(8,322)	(9,773)
Net (Loss) Income									(2,617)			(6,229)	(8,322)	(9,773)
Non-Guarantor Subsidiaries [Member]
Condensed Income Statements, Captions [Line Items]
Net Sales									26,648			97,528	149,725	124,465
COST OF SALES (exclusive of amortization shown separately below)									12,944			63,923	92,418	73,839
Gross Margin									13,704			33,605	57,307	50,626
OPERATING EXPENSES:
Research and development									34			92	376	35
Selling and marketing									4,621			13,391	25,168	20,886
Distribution									1,587			5,499	7,482	6,698
General and administrative									3,615			9,784	8,829	9,985
Amortization of intangibles									57			1,890	2,382	2,282
Total operating expenses									9,914			30,656	44,237	39,886
(LOSS) INCOME FROM OPERATIONS									3,790			2,949	13,070	10,740
NON-OPERATING (EXPENSE) INCOME:
Interest income									117			89	84	97
Interest expense									(21)			(64)	(46)	(22)
Other, net									2,905			41	(927)	588
Total non-operating (expense) income									3,001			66	(889)	663
(Loss) Income Before Income Taxes									6,791			3,015	12,181	11,403
(Benefit) Provision for Income Taxes									2,782			1,155	3,525	3,990
Net (Loss) Income Before Earnings of Consolidated Subsidiaries									4,009			1,860	8,656	7,413
Net (Loss) Income									$ 4,009			$ 1,860	$ 8,656	$ 7,413