Acquisition of Magellan - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Mar. 24, 2016	Oct. 01, 2014	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Mar. 22, 2016	Sep. 30, 2015
Business Acquisition [Line Items]
Proceeds from term loan					$ 59,851
Acquisition consideration payable			$ 2,198		2,198
Goodwill			63,698		63,698			$ 22,349
COST OF SALES			17,756	$ 17,873	51,020	$ 55,673
General and administrative			7,537	$ 6,535	22,306	$ 20,860
Inventory [Member]
Business Acquisition [Line Items]
Fair value adjustments		$ 154
Property, Plant and Equipment [Member]
Business Acquisition [Line Items]
Fair value adjustments		366
Intangible Assets [Member]
Business Acquisition [Line Items]
Fair value adjustments		27,610
Magellan [Member]
Business Acquisition [Line Items]
Total consideration paid	$ 67,690
Acquisition consideration payable	2,198
Goodwill	42,740
Acquisition-related costs					1,173
COST OF SALES			154		154
General and administrative			$ 759		$ 759
Term loan		$ 60,000
Magellan [Member] | Five - Year Term Loan [Member]
Business Acquisition [Line Items]
Proceeds from term loan	$ 60,000
Term loan							$ 60,000