BALANCE SHEET COMPONENTS (Components of significant balance sheet accounts) (Details) - USD ($) $ in Thousands		Jan. 02, 2016	Oct. 03, 2015
Inventories, net:
Raw materials and supplies		$ 18,888	$ 23,541
Work in process		19,297	24,110
Finished goods		51,046	50,518
Inventory, gross		89,231	98,169
Inventory reserves		(19,583)	(19,073)
Inventories, net		69,648	79,096
Property, plant and equipment, net:
Buildings and building improvements		33,699	33,760
Leasehold improvements		19,428	19,512
Data processing equipment and software		28,694	28,861
Machinery, equipment, furniture and fixtures		52,569	52,106
Property, plant and equipment, gross		134,390	134,239
Accumulated depreciation		(82,314)	(81,005)
Property, plant and equipment, net		52,076	53,234
Accrued expenses and other current liabilities:
Wages and benefits		13,310	19,166
Accrued customer obligations (1)	[1]	7,430	9,215
Commissions and professional fees		3,015	3,880
Deferred rent		2,448	2,450
Severance (2)	[2]	1,975	1,645
Other		8,632	9,615
Accrued expenses and other current liabilities		$ 36,810	$ 45,971

[1] Represents customer advance payments, customer credit program, accrued warranty expense and accrued retrofit obligations.

[2] Includes the restructuring plan discussed in Note 3, $1.2 million of severance payable in connection with the October 2015 retirement of the Company's CEO, and other severance payments which are not part of the Company's plan to streamline its global operations and functions.