GOODWILL AND INTANGIBLE ASSETS - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 01, 2016	Apr. 03, 2015	Apr. 01, 2016	Apr. 03, 2015	Oct. 02, 2015
Indefinite-lived Intangible Assets [Line Items]
Amortization expense for intangible assets	$ 3,800	$ 1,700	$ 6,801	$ 3,286
Future amortization expense, fiscal year 2016	6,300		6,300
Future amortization expense, fiscal year 2017	13,500		13,500
Future amortization expense, fiscal year 2018	9,800		9,800
Future amortization expense, fiscal year 2019	9,200		9,200
Future amortization expense, fiscal year 2020	7,900		7,900
Future amortization expense, thereafter	9,500		9,500
In Process Research and Development
Indefinite-lived Intangible Assets [Line Items]
Research and development asset acquired fair value	$ 9,300		$ 9,300		$ 10,600