Annual report pursuant to Section 13 and 15(d)

Organization and Summary of Significant Accounting Policies- Narrative (Details)

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Organization and Summary of Significant Accounting Policies- Narrative (Details) - USD ($)
12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Mar. 31, 2022
Business Acquisition [Line Items]      
Entity wide disclosure on geographic areas, revenue from external customers attributed to foreign countries, percentage 51.00% 56.00% 57.00%
Disclosure on geographic areas, long-lived assets in foreign countries 49.00% 54.00%  
Billed contracts receivable $ 4,646,000 $ 3,399,000  
Accounts receivable, allowance for doubtful accounts 1,428,000 2,682,000  
Cloud computing arrangement, unamortized implementation cost 2,800,000    
Asset impairment charges   865,000  
Goodwill, impairment loss 0 0 $ 0
Goodwill acquired $ 51,750,000 18,620,000  
Standard warranty term 1 year    
Research and development expense $ 9,799,000 $ 10,568,000 $ 6,436,000
Prepaid expenses and other current assets      
Business Acquisition [Line Items]      
Cloud computing arrangement, unamortized implementation cost 161,000    
Other non-current assets      
Business Acquisition [Line Items]      
Cloud computing arrangement, unamortized implementation cost 2,639,000    
Vapor Power      
Business Acquisition [Line Items]      
Goodwill acquired $ 51,751,000