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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Cash flows from operating activities      
Net income / (loss) $ (463) $ 4 $ 2,795
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation 859 1,099 1,046
Amortization 275 277 271
Loss / (gain) on disposal of property, plant and equipment (5) 12
Gain on disposal of intangible assets (79)
Write-down of inventories 73 569 156
Write off of property, plant and equipment 2 2
Gain from deregistration of subsidiaries (22)
Change in cash surrender value of life insurance contract (4) (5) (4)
Change in fair value of financial instruments (4) 7 61
Dividend income from financial instruments at fair value (1) (4) (1)
Gain from sale of financial instruments at fair value (16) (58) (3)
Interest expense 116 62 0
Changes in assets and liabilities:      
Trade receivables 166 498 (300)
Other receivables, deposits and prepayments (586) 965 (163)
Inventories 18 (563) 649
Accounts payable (407) (419) (1,318)
Contract liabilities 17
Accrued charges and deposits 4 122 (136)
Payable to affiliated parties (23) 19 (25)
Income tax liabilities (539) 216
Long-term deposit received (46) 738
Long-term loan 42
Net cash provided by operating activities 15 2,786 3,145
Cash flows from investing activities      
Proceeds from disposal of property, plant and equipment 5 4
Acquisition of property, plant and equipment (578) (364) (289)
Proceeds from disposal of intangible assets 120
Acquisition of financial instruments at fair value (226) (517) (163)
Payments made upon expiry of forward contracts (225)
Proceeds from sale of financial instruments at fair value 223 657 146
Dividends received from financial instruments at fair value 1 4 1
Net cash used in investing activities (575) (216) (410)
Cash flows from financing activities      
Capital lease payments (28) (44) (49)
Advance from notes payable 237 467 1,721
Repayment of notes payable (336) (502) (2,820)
Advance from bank loans 641
Repayment of bank loans (196) (143) (363)
Payment to affiliated party (67) (135) (135)
Stock repurchase (364) (572) (368)
Advance from long-term loan 2,465
Net cash (used in) / generated from financing activities (113) 1,536 (2,014)
Net increase / (decrease) in cash and cash equivalents (673) 4,106 721
Effect of exchange rate changes on cash and cash equivalents (551) 900 (523)
Cash and cash equivalents, beginning of year 8,751 3,745 3,547
Cash and cash equivalents, end of year 7,527 8,751 3,745
Cash paid during the year for:      
Interest 23 10 37
Income tax $ 562 $ 360