Quarterly report pursuant to Section 13 or 15(d)

Goodwill - Summary of Changes in Carrying Amount of Goodwill (Details)

v3.7.0.1
Goodwill - Summary of Changes in Carrying Amount of Goodwill (Details)
$ in Thousands
6 Months Ended
Jul. 01, 2017
USD ($)
Goodwill [Roll Forward]  
Balance at beginning of period $ 115,207
Acquisition 1,804
Foreign Currency Translation 554
Balance at end of period 117,565
Operating Segments | Aerospace  
Goodwill [Roll Forward]  
Balance at beginning of period 115,207
Acquisition 1,804
Foreign Currency Translation 554
Balance at end of period 117,565
Operating Segments | Test Systems  
Goodwill [Roll Forward]  
Balance at beginning of period 0
Acquisition 0
Foreign Currency Translation 0
Balance at end of period $ 0