BUSINESS COMBINATIONS (Details) (USD $)	3 Months Ended		9 Months Ended					9 Months Ended		0 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Kilitch Drugs (India) Limited [Member]	Sep. 30, 2012 Kilitch Drugs (India) Limited [Member]	Feb. 28, 2012 Kilitch Drugs (India) Limited [Member]	Sep. 30, 2013 Kilitch Drugs (India) Limited [Member] Minimum [Member]	Sep. 30, 2013 Kilitch Drugs (India) Limited [Member] Maximum [Member]	Feb. 28, 2012 Kilitch Drugs (India) Limited [Member] Adjusted Fair Valuation [Member]	Sep. 30, 2012 Kilitch Drugs (India) Limited [Member] Pro Forma [Member]	Sep. 30, 2013 Hi-Tech Pharmacal Co. Inc [Member]	Apr. 30, 2013 Hi-Tech Pharmacal Co. Inc [Member]	Aug. 27, 2013 Hi-Tech Pharmacal Co. Inc [Member]	Jul. 31, 2013 Hi-Tech Pharmacal Co. Inc [Member]	Aug. 27, 2013 Hi-Tech Pharmacal Co. Inc [Member] Term Loan [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition					Feb. 28, 2012
Business Acquisition, Date of Acquisition Agreement					Oct. 05, 2011							Aug. 27, 2013
Total consideration paid							$ 55,200,000			$ 55,224,000
Purchase price under definitive agreement														640,000,000
Aggregate principal amount in debt offering																600,000,000
Business acquisition price per share (in dollars per share)														$ 43.50
Net sales of acquired entity													232,400,000
Net income of acquired entity													16,300,000
Cash and cash equivalents of acquired entity															108,000,000
Contingent consideration earned					500,000		7,800,000
Consideration [Abstract]
Cash paid							55,200,000			55,224,000
Less working capital shortfall refunded by sellers										(1,028,000)
Total Purchase Price										54,196,000
Acquisition-related costs: [Abstract]
Stamp duties paid for transfer of land and buildings										1,583,000
Acquisition-related compensation expense										7,771,000
Due diligence, legal, travel and other acquisition-related costs										676,000
Acquisition-related costs	1,459,000	511,000	1,978,000	9,155,000	500,000	8,800,000				10,030,000
Recognized amounts of identifiable assets acquired and liabilities assumed: [Abstract]
Accounts receivable										2,130,000
Inventory										1,799,000
Land										2,583,000
Buildings, plant and equipment										8,474,000
Construction in progress										14,231,000
Goodwill, deductible										22,613,000
Other intangible assets, deductible										5,908,000
Other assets										38,000
Assumed liabilities										(2,878,000)
Deferred tax liabilities										(702,000)
Business combination, recognized amounts of identifiable assets acquired and liabilities assumed, net										54,196,000
Acquired finite-lived intangible assets useful life								4 years	5 years
Revenue	81,892,000	69,634,000	232,758,000	184,638,000	11,700,000	12,400,000					188,642,000
Net income	12,205,000	13,753,000	35,684,000	26,567,000							26,911,000
Net income per diluted share (in dollars per share)	$ 0.11	$ 0.12	$ 0.32	$ 0.24							$ 0.24
Pre-tax loss					$ 2,900,000	$ 8,400,000