Business Combinations- (Narrative) (Detail) - USD ($) $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended								12 Months Ended
	Apr. 30, 2014	Jun. 30, 2014	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Business Acquisition [Line Items]
Goodwill		$ 66,516	$ 67,870				$ 66,516				$ 67,870	$ 66,516	$ 33,526
Net sales			146,587	$ 145,796	$ 123,765	$ 130,803	139,580	$ 124,830	$ 116,508	$ 129,261	546,951	510,179	499,690
Income (loss) before income taxes											53,865	44,674	34,550
Proforma amortization charges from acquired intangible assets												4,783	4,783
Proforma increase in interest expense												3,414	3,414
Contingent consideration											(3,468)		$ 3,244
Pack Pharmaceuticals Llc
Business Acquisition [Line Items]
Percentage of issued and outstanding membership interests acquired	100.00%
Business acquisition, purchase price	$ 91,596
Number of shares issued	260
Value of shares issued	$ 5,685
Purchase price, initial cash payment	$ 85,911
Purchase price, earn-out period	3 years
Purchase price, earn-out amount	$ 15,000
Accrued contingent consideration		3,797	783				$ 3,797				783	$ 3,797
Goodwill	32,722
Net sales		8,131
Income (loss) before income taxes		$ (454)
Contingent consideration			$ (3,468)
Pack Pharmaceuticals Llc | Product Rights
Business Acquisition [Line Items]
Intangible assets assumed	$ 38,280
Amortizable period of intangible assets	11 years
Pack Pharmaceuticals Llc | Customer Relationships
Business Acquisition [Line Items]
Intangible assets assumed	$ 14,170
Amortizable period of intangible assets	11 years
Pack Pharmaceuticals Llc | Trademarks
Business Acquisition [Line Items]
Intangible assets assumed	$ 90
Amortizable period of intangible assets	3 years
Pack Pharmaceuticals Llc | Selling, general and administrative expenses
Business Acquisition [Line Items]
Contingent consideration											$ (3,468)