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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flows from operating activities:    
Net loss $ (15,016) $ (8,811)
Adjustment to reconcile net loss to net cash:    
Depreciation and amortization 651 478
Provision against debtors and advances 1,718 0
Permanent impairment of PPE 833 0
Impairment of non-marketable securities 49 169
Common stock-based compensation and expenses, net 2,197 658
Forgiveness of PPP Loan (430) 0
Changes in:    
Accounts receivables, net 50 (42)
Inventory 1,930 (1,233)
Deposits and advances 541 (2,198)
Claims and advances (334) 93
Accounts payable 504 (287)
Accrued and other liabilities (129) 373
Operating lease asset 38 0
Operating lease liability (64) 0
Net cash used in operating activities (7,462) (10,800)
Cash flow from investing activities:    
Purchase of property, plant, and equipment (207) (1,470)
Proceed from marketable securities 0 47
Investment in marketable securities 0 5,081
Investment in non-marketable securities 0 (149)
Acquisition and filing cost of patents and rights (535) (122)
Net cash used in investing activities (742) 3,387
Cash flows from financing activities:    
Issuance of equity stock through offering (net of expenses) 4,145 14,158
Proceeds from/repayment of long-term loan (3) 530
Net cash provided by financing activities 4,142 14,688
Effects of exchange rate changes on cash and cash equivalents (26) 15
Net increase/(decrease) in cash and cash equivalents (4,088) 7,290
Cash and cash equivalents at the beginning of the period 14,548 7,258
Cash and cash equivalents at the end of the period 10,460 14,548
Supplementary information:    
Cash paid for interest 0 0
Non-cash items:    
Common stock issued/granted for stock-based compensation, including patent acquisition 2,197 808
Forgiveness of PPP Loan (430) 0
Amortization of operating lease $ 115 $ 22