Quarterly report pursuant to Section 13 or 15(d)

Basis of Presentation - Narrative (Details)

v3.22.1
Basis of Presentation - Narrative (Details)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Feb. 13, 2019
element
Mar. 31, 2022
USD ($)
Jan. 31, 2022
USD ($)
Apr. 02, 2022
USD ($)
Apr. 03, 2021
USD ($)
Dec. 31, 2021
USD ($)
Sep. 30, 2021
USD ($)
Business Acquisition [Line Items]              
Allowance for doubtful accounts       $ 2.9   $ 3.2  
Bad debt expense       0.0 $ 0.3    
Total writeoffs charged against allowance       0.1 0.0    
Doubtful debts recovered       0.2 0.0    
Research and Development Expenses       12.2 $ 10.3    
USDOT | AMPJ Award              
Business Acquisition [Line Items]              
USDOT grant receivable amount (up to)             $ 14.7
Portion of grant received       5.2   $ 7.4  
Revenue recognized included in contract liability balance       $ 6.0      
Sold | Semiconductor Test Business | Test Systems              
Business Acquisition [Line Items]              
Number of elements for contingent earnouts | element 2            
Earnout proceeds received   $ 11.3 $ 10.7