Segments - Summary of Segment Reporting Information (Detail) - USD ($) $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Oct. 03, 2015 |
Jul. 04, 2015 |
Apr. 04, 2015 |
Dec. 31, 2014 |
Sep. 27, 2014 |
Jun. 28, 2014 |
Mar. 29, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Segment Reporting Information | |||||||||||
| Sales | $ 157,340 | $ 200,145 | $ 173,156 | $ 161,638 | $ 166,083 | $ 179,442 | $ 174,563 | $ 140,951 | $ 692,279 | $ 661,039 | $ 339,937 |
| Total operating profit | 98,801 | 87,362 | 42,305 | ||||||||
| Interest expense, net of interest income | (4,751) | (8,255) | (4,094) | ||||||||
| Income before income taxes | 94,050 | 79,107 | 38,211 | ||||||||
| Depreciation and amortization | 25,309 | 27,254 | 11,059 | ||||||||
| Total assets | 609,243 | 562,910 | 609,243 | 562,910 | 491,271 | ||||||
| Total capital expenditures | 18,641 | 40,882 | 6,868 | ||||||||
| Test Systems Segment | |||||||||||
| Segment Reporting Information | |||||||||||
| Sales | 142,541 | 166,292 | 9,407 | ||||||||
| Operating Segments | |||||||||||
| Segment Reporting Information | |||||||||||
| Total operating profit | $ 110,632 | $ 92,154 | $ 51,444 | ||||||||
| Operating margins | 16.00% | 13.90% | 15.10% | ||||||||
| Operating Segments | Aerospace Segment | |||||||||||
| Segment Reporting Information | |||||||||||
| Sales | $ 549,738 | $ 494,747 | $ 330,530 | ||||||||
| Total operating profit | $ 85,103 | $ 79,753 | $ 55,200 | ||||||||
| Operating margins | 15.50% | 16.10% | 16.70% | ||||||||
| Depreciation and amortization | $ 19,377 | $ 17,847 | $ 10,058 | ||||||||
| Total assets | 510,884 | 468,481 | 510,884 | 468,481 | 428,619 | ||||||
| Total capital expenditures | 16,503 | 35,650 | 6,711 | ||||||||
| Operating Segments | Test Systems Segment | |||||||||||
| Segment Reporting Information | |||||||||||
| Sales | 142,596 | 166,769 | 10,103 | ||||||||
| Total operating profit | $ 25,529 | $ 12,401 | $ (3,756) | ||||||||
| Operating margins | 17.90% | 7.40% | (37.20%) | ||||||||
| Depreciation and amortization | $ 5,209 | $ 8,786 | $ 590 | ||||||||
| Total assets | 64,934 | 69,247 | 64,934 | 69,247 | 11,035 | ||||||
| Total capital expenditures | 2,103 | 3,472 | 61 | ||||||||
| Intersegment Eliminations | Test Systems Segment | |||||||||||
| Segment Reporting Information | |||||||||||
| Sales | (55) | (477) | (696) | ||||||||
| Segment Reconciling Items | |||||||||||
| Segment Reporting Information | |||||||||||
| Interest expense, net of interest income | (4,751) | (8,255) | (4,094) | ||||||||
| Corporate and other expenses, net | (11,831) | (4,792) | (9,139) | ||||||||
| Corporate | |||||||||||
| Segment Reporting Information | |||||||||||
| Depreciation and amortization | 723 | 621 | 411 | ||||||||
| Total assets | $ 33,425 | $ 25,182 | 33,425 | 25,182 | 51,617 | ||||||
| Total capital expenditures | $ 35 | $ 1,760 | $ 96 | ||||||||