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Disposal of Video Camera Segment - Summary of Balance Sheet Information of Discontinued Video Camera Segment (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 28, 2014
Dec. 28, 2013
Assets:    
Accounts receivable, net    $ 2,597
Inventories    3,568
Other current assets    107
Total current assets    6,272 [1]
Property, plant and equipment, net    431 [1]
Total assets    6,703
Liabilities:    
Accounts payable    730
Other accrued current liabilities    1,017
Total liabilities    $ 1,747 [1]
[1] Derived from December 28, 2013 audited financial statements