Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.1
Goodwill - Summary of Changes in Carrying Amount of Goodwill (Details)
$ in Thousands
 3 Months Ended
Mar. 28, 2020
USD ($)
reporting_unit
Goodwill [Roll Forward]  
Balance at beginning of period $ 144,970
Impairment Charges (73,704)
ForeignCurrencyTranslation (269)
Balance at end of period $ 70,997
Number of reporting units not impaired | reporting_unit 4
Number of reporting units | reporting_unit 8
Number of reporting units impaired | reporting_unit 4
Sensitivity analysis, impact of 1% increase of discount rate to goodwill fair value $ 9,300
Sensitivity analysis, impact of 1% decrease of revenue growth rate to goodwill fair value 4,400
PECO  
Goodwill [Roll Forward]  
Balance at end of period 32,800
Aerospace Segment  
Goodwill [Roll Forward]  
Impairment Charges (73,700)
Operating Segments | Aerospace Segment  
Goodwill [Roll Forward]  
Balance at beginning of period 123,038
Impairment Charges (73,704)
ForeignCurrencyTranslation (269)
Balance at end of period 49,065
Operating Segments | Test Systems Segment  
Goodwill [Roll Forward]  
Balance at beginning of period 21,932
Impairment Charges 0
ForeignCurrencyTranslation 0
Balance at end of period $ 21,932