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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash Flow from Operating Activities    
Net (loss) / income $ (170) $ 856
Adjustments to reconcile net income to net cash flow provided by operating activities    
Unrealized foreign exchange loss 135 5
Depreciation and amortization 2,093 3,546
(Gain) / Loss on sales of property, plant and equipment (101) 72
Provision for obsolete inventories, net 122 15
Stock compensation 413 428
Bad debt recovery (61) (5)
Allowance for expected credit losses 62 0
Accrued interest expense, net accrued interest income (20) (50)
Payment of interest portion of finance lease (3) (5)
Warranty expense, net 2 12
Reversal of income tax provision (9) (7)
Deferred tax expense / (benefits) 20 (22)
Changes in operating assets and liabilities, net of acquisition effects    
Trade accounts receivable 1,697 (256)
Other receivables (344) (150)
Other assets 103 (34)
Inventories 853 (600)
Prepaid expense and other current assets 67 128
Accounts payable, accrued expense and contract liabilities (2,437) 462
Income taxes payable (313) (254)
Other non-current liabilities 3 (567)
Operating lease liabilities (1,077) (1,056)
Net Cash Provided by Operating Activities 1,035 2,518
Cash Flow from Investing Activities    
Withdrawal from unrestricted term deposits, net 4,901 4,020
Investment in unrestricted term deposits, net (4,838) (3,625)
Additions to property, plant and equipment (410) (208)
Proceeds from disposal of property, plant and equipment 246 71
Proceeds from disposal of assets held-for-sale 0 198
Net Cash (Used in) / Provided by Investing Activities (101) 456
Cash Flow from Financing Activities    
Payment on lines of credit (98) (961)
Payment of bank loans (208) (362)
Payment of finance leases (48) (82)
Proceeds from exercising stock options 165 375
Proceeds from lines of credit 93 952
Net Cash (Used in) Financing Activities (96) (78)
Effect of Changes in Exchange Rate 224 296
Net Increase in Cash, Cash Equivalents, and Restricted Cash 1,062 3,192
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period 12,556 10,038
Cash, Cash Equivalents, and Restricted Cash at End of Period 13,618 13,230
Supplementary Information of Cash Flows    
Interest 35 39
Income taxes 492 425
Cash 11,020 10,716
Restricted Term-Deposits in Current Assets 776 754
Restricted Term-Deposits in Non-Current Assets 1,822 1,760
Total Cash, Cash Equivalents, and Restricted Cash Shown in Statements of Cash Flows $ 13,618 $ 13,230