Quarterly report pursuant to Section 13 or 15(d)

Segment Information - Summary of Segment Reporting Information (Detail)

v2.4.0.8
Segment Information - Summary of Segment Reporting Information (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
Segment Reporting Information [Line Items]          
Total Consolidated Sales $ 89,681 $ 68,899 $ 234,481 $ 199,026  
Income from Operations 12,352 7,655 31,394 24,696  
Interest Expense, Net of Interest Income 1,605 274 2,085 803  
Income Before Income Taxes 10,747 7,381 29,309 23,893  
Total Assets 432,830   432,830   211,989
Aerospace [Member]
         
Segment Reporting Information [Line Items]          
Total Assets 349,363   349,363   177,168
Test Systems [Member]
         
Segment Reporting Information [Line Items]          
Total Assets 9,584   9,584   18,121
Corporate [Member]
         
Segment Reporting Information [Line Items]          
Total Assets 73,883   73,883   16,700
Operating Segments [Member]
         
Segment Reporting Information [Line Items]          
Total Consolidated Sales 89,681 68,899 234,481 199,026  
Income from Operations 14,632 9,445 38,232 29,833  
Percentage of Operating Profit (Loss) and Margins 16.30% 13.70% 16.30% 15.00%  
Income Before Income Taxes 10,747 7,381 29,309 23,893  
Operating Segments [Member] | Aerospace [Member]
         
Segment Reporting Information [Line Items]          
Total Consolidated Sales 87,525 65,788 227,870 190,212  
Income from Operations 15,377 10,577 41,112 33,358  
Percentage of Operating Profit (Loss) and Margins 17.60% 16.10% 18.00% 17.50%  
Operating Segments [Member] | Test Systems [Member]
         
Segment Reporting Information [Line Items]          
Total Consolidated Sales 2,660 3,111 7,207 8,814  
Income from Operations (745) (1,132) (2,880) (3,525)  
Percentage of Operating Profit (Loss) and Margins (28.00%) (36.40%) (40.00%) (40.00%)  
Intersegment Eliminations [Member] | Test Systems [Member]
         
Segment Reporting Information [Line Items]          
Total Consolidated Sales (504)   (596)    
Operating Segments Intersegment Elimination Net [Member] | Test Systems [Member]
         
Segment Reporting Information [Line Items]          
Total Consolidated Sales 2,156 3,111 6,611 8,814  
Segment Reconciling Items [Member]
         
Segment Reporting Information [Line Items]          
Interest Expense, Net of Interest Income 1,605 274 2,085 803  
Corporate Expenses and Other $ 2,280 $ 1,790 $ 6,838 $ 5,137