Balance Sheet Components - Accounts Receivable, Net, Prepaid Expenses and Other Current Assets, Inventories, Property and Equipment, Net (Detail) - USD ($) $ in Thousands		Jul. 03, 2015	Dec. 31, 2014
Accounts receivable, net:
Accounts receivable		$ 80,096	$ 81,201
Less: allowances for doubtful accounts, returns and discounts		(4,017)	(7,057)
Total		76,079	74,144
Prepaid expenses and other current assets:
Prepaid inventories to contract manufacturer(1)	[1]	14,200	0
Prepaid software license to Vislink(2)	[2]	0	1,233
Other Prepayments		10,061	9,713
Deferred cost of revenue		2,346	2,524
Income tax receivable		998	2,316
Other		1,255	1,753
Prepaid Expense and Other Assets, Current		28,860	17,539
Inventories:
Raw materials		1,601	1,422
Work-in-process		1,325	1,255
Finished goods		29,573	30,070
Total inventories, net		32,499	32,747
Property and equipment, net:
Furniture and fixtures		7,708	7,691
Machinery and equipment		118,476	116,031
Leasehold improvements		10,176	8,140
Property and equipment, gross		136,360	131,862
Less: accumulated depreciation and amortization		(109,273)	(104,641)
Property and equipment, net		$ 27,087	$ 27,221

[1] the Company made a $14.2 million advance payment for future inventory requirements to a supplier in order to secure more favorable pricing. The Company anticipates that this amount will begin to offset in the fourth quarter of 2015 through the first quarter of 2016 against the accounts payable owed to this supplier.

[2] The prepaid inventories were related to prepayment for software licenses made to Vislink (see Note 4, “Investments in Other Equity Securities” for additional information on Vislink).