Quarterly report pursuant to Section 13 or 15(d)

Sales to Major Customers - Information Relating to Activity with Customers (Detail)

v2.4.0.8
Sales to Major Customers - Information Relating to Activity with Customers (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 28, 2013
Sep. 29, 2012
Sep. 28, 2013
Sep. 29, 2012
Dec. 31, 2012
Panasonic [Member]
         
Revenue, Major Customer [Line Items]          
Percent of consolidated revenue 28.00% 40.00% 30.00% 38.00%  
Accounts Receivable $ 12,039   $ 12,039   $ 17,412
Boeing [Member]
         
Revenue, Major Customer [Line Items]          
Percent of consolidated revenue 20.00% 6.00% 12.00% 5.00%  
Accounts Receivable $ 8,566   $ 8,566   $ 1,939