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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Cash flows from operating activities:    
Net loss $ (2,378) $ (2,075)
Adjustment to reconcile net loss to net cash:    
Depreciation and amortization 162 155
Common stock-based compensation and expenses, net 402 357
Other non-cash items 0 (53)
Changes in:    
Accounts receivables, net 11 (118)
Inventory 30 10
Deposits and advances (118) 33
Claims and advances 0 (13)
Accounts payable (2) 142
Accrued and other liabilities 151 91
Operating lease asset 5 31
Operating lease liability (15) (28)
Net cash used in operating activities (1,752) (1,468)
Cash flow from investing activities:    
Purchase of property, plant, and equipment (38) (20)
Sale of property, plant, and equipment 0 43
Acquisition and development of intangible assets (93) (28)
Net cash used in investing activities (131) (5)
Cash flows from financing activities:    
Net proceeds from the issuance of common stock 2,508 0
Repayment of long-term loan (1) (1)
Net cash provided by (used in) financing activities 2,507 (1)
Effects of exchange rate changes on cash and cash equivalents 2 1
Net increase (decrease) in cash and cash equivalents 626 (1,473)
Cash and cash equivalents at the beginning of the period 1,198 3,196
Cash and cash equivalents at the end of the period 1,824 1,723
Non-cash items:    
Common stock issued/granted for stock-based compensation, including patent acquisition $ 433 $ 357