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BUSINESS ACQUISITIONS (Narrative) (Details)
$ in Millions, $ in Millions
9 Months Ended
Dec. 28, 2019
USD ($)
Dec. 28, 2019
CAD ($)
Dec. 29, 2018
USD ($)
Business Acquisition [Line Items]      
Amount of stock purchase agreement   $ 0.4  
Angel's Instrumentation, Inc. [Member]      
Business Acquisition [Line Items]      
Intangible assets acquired, useful life 10 years 10 years  
Business acquisition, consideration transferred $ 4.7    
Business acquisition, cash acquired 0.1    
Business acquisition, other holdback amounts unpaid 0.9    
Acquisition costs 0.6    
IIS [Member]      
Business Acquisition [Line Items]      
Acquisition costs 1.4    
NBS Calibration, Inc. [Member]      
Business Acquisition [Line Items]      
Acquisition costs $ 0.1   $ 0.1