Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Additional Information (Detail)

v2.4.0.8
Fair Value - Additional Information (Detail) (USD $)
1 Months Ended 6 Months Ended
Jun. 29, 2013
Dec. 31, 2012
Jul. 30, 2012
Max-Viz, Inc. [Member]
Jun. 29, 2013
Max-Viz, Inc. [Member]
Jun. 29, 2013
Ballard [Member]
Jun. 29, 2013
Test Systems [Member]
Jun. 29, 2013
Maximum [Member]
Max-Viz, Inc. [Member]
Jun. 29, 2013
Maximum [Member]
Ballard [Member]
Fair Value Of Assets And Liabilities Measured On Non Recurring Basis [Line Items]                
Revenue growth target period     3 years 3 years 4 years      
Contingent consideration on fair value liabilities $ 746,000 $ 814,000         $ 8,000,000 $ 5,500,000
Total amortized intangible assets           $ 3,900,000