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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net loss $ (4,792,000) $ (2,217,000)
Adjustments to reconcile net loss to net cash used in operating activities:    
Allowance for credit losses and (recoveries) (9,000) (20,000)
Provision for excess and obsolete inventories 124,000 70,000
Non-cash lease expense 331,000 315,000
Depreciation and amortization 173,000 149,000
Stock-based compensation 887,000 341,000
Changes in assets and liabilities:    
Accounts receivable 1,739,000 1,602,000
Inventories (587,000) 58,000
Prepaid expenses and other assets (2,157,000) (67,000)
Accounts payable 497,000 (231,000)
Accrued expenses and other liabilities (64,000) (1,712,000)
Net cash used in operating activities (3,858,000) (1,712,000)
Cash flows from investing activities:    
Purchases of property and equipment (358,000) (21,000)
Net cash used in investing activities (358,000) (21,000)
Cash flows from financing activities:    
Proceeds from issuance of common stock under employee stock plans 4,770,000 226,000
Net cash provided by financing activities 14,049,000 11,024,000
Net increase in cash and cash equivalents 9,833,000 9,291,000
Cash and cash equivalents at beginning of the period 67,212,000 13,434,000
Cash and cash equivalents at end of the period 77,045,000 22,725,000
Supplemental cash flow information:    
Cash paid (received) for income taxes (52,000) 10,000
At the market offering    
Cash flows from financing activities:    
Proceeds from issuance of common stock $ 9,279,000 $ 10,798,000