Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Segment Reporting Information (Detail)

v3.3.0.814
Segment Information - Summary of Segment Reporting Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 03, 2015
Sep. 27, 2014
Oct. 03, 2015
Sep. 27, 2014
Dec. 31, 2014
Segment Reporting Information          
Sales $ 200,145 $ 179,442 $ 534,939 $ 494,956  
Operating profit (loss) 37,130 25,771 82,828 61,879  
Deductions from Operating Profit          
Interest expense, net of interest income (1,243) (2,301) (3,600) (7,183)  
Income before income taxes 35,887 23,470 79,228 54,696  
Total assets 648,393   648,393   $ 562,910
Test Systems          
Segment Reporting Information          
Sales 61,417 57,209 121,689 128,828  
Operating Segments          
Segment Reporting Information          
Operating profit (loss) $ 40,035 $ 27,756 $ 91,346 $ 68,342  
Operating margins (percentage) 20.00% 15.50% 17.10% 13.80%  
Operating Segments | Aerospace          
Segment Reporting Information          
Sales $ 138,728 $ 122,233 $ 413,250 $ 366,128  
Operating profit (loss) $ 23,055 $ 22,057 $ 66,728 $ 60,308  
Operating margins (percentage) 16.60% 18.00% 16.10% 16.50%  
Deductions from Operating Profit          
Total assets $ 531,136   $ 531,136   468,481
Operating Segments | Test Systems          
Segment Reporting Information          
Sales 61,417 $ 57,209 121,744 $ 129,065  
Operating profit (loss) $ 16,980 $ 5,699 $ 24,618 $ 8,034  
Operating margins (percentage) 27.60% 10.00% 20.20% 6.20%  
Deductions from Operating Profit          
Total assets $ 87,909   $ 87,909   69,247
Intersegment Eliminations | Test Systems          
Segment Reporting Information          
Sales 0 $ 0 (55) $ (237)  
Segment Reconciling Items          
Deductions from Operating Profit          
Interest expense, net of interest income 1,243 2,301 3,600 7,183  
Corporate expenses and other 2,905 $ 1,985 8,518 $ 6,463  
Corporate          
Deductions from Operating Profit          
Total assets $ 29,348   $ 29,348   $ 25,182