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SHARE-BASED COMPENSATION (Tables)
6 Months Ended
Sep. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-Based Compensation Expense
The following is a summary of share-based compensation expense including restricted stock units and performance-based restricted stock units granted pursuant to the Company's Amended 2019 Plan, and employee stock purchases made under the ESPP, based on estimated fair values within the applicable cost and expense lines identified below (in thousands):
Three Months EndedSix Months Ended
September 30,September 30,
 2025202420252024
Cost of product revenue$297 $295 $710 $726 
Cost of service revenue1,930 1,905 4,677 4,794 
Research and development3,990 3,934 9,522 9,820 
Sales and marketing4,672 5,275 11,562 12,779 
General and administrative2,668 3,477 7,045 7,965 
$13,557 $14,886 $33,516 $36,084