SELECTED QUARTERLY FINANCIAL RESULTS (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended																12 Months Ended
	Oct. 01, 2016		Jul. 02, 2016		Apr. 02, 2016		Jan. 02, 2016		Oct. 03, 2015		Jun. 27, 2015		Mar. 28, 2015		Dec. 27, 2014		Oct. 01, 2016		Oct. 03, 2015		Sep. 27, 2014
Quarterly Financial Information Disclosure [Abstract]
Revenue, Net	$ 145,844		$ 216,414		$ 156,400		$ 108,534		$ 119,172		$ 164,634		$ 145,227		$ 107,438		$ 627,192		$ 536,471		$ 568,569
Gross Profit	(66,621)		(100,040)		(69,647)		(50,421)		(58,217)		(77,571)		(68,570)		(54,734)		(286,729)		(259,092)		(273,554)
Operating Income (Loss)	3,913		38,622		11,709		(1,705)		1,648		16,086		9,791		9,726		52,539		37,251		76,984
Income Tax Expense (Benefit)	(5,661)		7,519		7,045		(1,265)		(7,999)		(8,775)		1,997		1,843		7,638		(12,934)		14,145
Net income	$ 10,329		$ 31,785		$ 5,089		$ (91)		$ 9,827		$ 25,039		$ 7,931		$ 7,842		$ 47,112		$ 50,639		$ 62,988
Basic (in dollars per share)	$ 0.15	[1]	$ 0.45	[1]	$ 0.07	[1]	$ 0.00	[1]	$ 0.14	[1]	$ 0.33	[1]	$ 0.10	[1]	$ 0.10	[1]	$ 0.67	[1]	$ 0.67	[1]	$ 0.82
Earnings Per Share, Diluted	$ 0.15	[1]	$ 0.45	[1]	$ 0.07	[1]	$ 0.00	[1]	$ 0.13	[1]	$ 0.33	[1]	$ 0.10	[1]	$ 0.10	[1]	$ 0.67	[1]	$ 0.67	[1]	$ 0.81
Weighted average shares outstanding - Basic (in shares)	70,404		70,379		70,389		70,738		72,731		75,420		76,821		76,888		70,477		75,414		76,396
Weighted Average Number of Shares Outstanding, Diluted	71,017		70,843		70,634		70,738		72,883		75,891		77,570		77,432		70,841		75,659		77,292

[1] EPS for the year may not equal the sum of quarterly EPS due to changes in weighted share calculations.