Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Additional Information (Detail)

v2.4.0.8
Fair Value - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
9 Months Ended
Oct. 01, 2013
AeroSat [Member]
Sep. 27, 2014
Level 3 [Member]
Maximum [Member]
Sep. 27, 2014
Level 3 [Member]
Revenue Recognition Milestone Method 2013 to 2015 [Member]
Maximum [Member]
Max-Viz, Inc. [Member]
Sep. 27, 2014
Level 3 [Member]
Revenue Recognition Milestone Method 2012 to 2016 [Member]
Maximum [Member]
Ballard [Member]
Sep. 27, 2014
Level 3 [Member]
Revenue Recognition Milestone Method 2014 and 2015 [Member]
Maximum [Member]
AeroSat [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Contingent consideration on fair value liabilities $ 5,000   $ 8,000 $ 5,500 $ 53,000
Fair value liabilities, description   Our Level 3 fair value liabilities represent contingent consideration recorded related to the 2011 Ballard acquisition, to be paid up to a maximum of $5.5 million if annual revenue growth targets are met in the years 2012 - 2016, the 2012 Max-Viz acquisition, to be paid up to a maximum of $8.0 million if annual revenue targets are met in the years 2013 - 2015 and the 2013 AeroSat acquisition, to be paid up to a maximum of $53.0 million if annual revenue targets are met in the years 2014 and 2015