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 6 Months Ended
Jun. 29, 2013
Jun. 30, 2012
Jun. 29, 2013
Jun. 30, 2012
Dec. 31, 2012
Segment Reporting Information [Line Items]          
Total Consolidated Sales $ 70,833 $ 64,989 $ 144,800 $ 130,127  
Total Operating Profit 10,837 9,585 23,600 20,388  
Percentage of Operating Profit (loss) and Margins 15.30% 14.70% 16.30% 15.70%  
Interest Expense, Net of Interest Income 262 266 480 529  
Corporate Expenses and Other 2,857 1,809 4,558 3,347  
Income Before Income Taxes 7,718 7,510 18,562 16,512  
Total Assets 222,437   222,437   211,989
Aerospace [Member]
          
Segment Reporting Information [Line Items]          
Total Consolidated Sales 68,676 62,423 140,345 124,424  
Total Operating Profit 11,447 10,903 25,735 22,781  
Percentage of Operating Profit (loss) and Margins 16.70% 17.50% 18.30% 18.30%  
Total Assets 180,075   180,075   177,168
Test Systems [Member]
          
Segment Reporting Information [Line Items]          
Total Consolidated Sales 2,157 2,566 4,547 5,703  
Test systems Net Sales 2,157 2,566 4,455 5,703  
Total Operating Profit (610) (1,318) (2,135) (2,393)  
Percentage of Operating Profit (loss) and Margins (28.30%) (51.40%) (47.00%) (42.00%)  
Total Assets 16,028   16,028   18,121
Corporate Segment [Member]
          
Segment Reporting Information [Line Items]          
Total Assets 26,334   26,334   16,700
Intersegment Eliminations [Member]
          
Segment Reporting Information [Line Items]          
Less Intersegment Sales      $ (92)