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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
Cash flows from operating activities: |  |  |
Net income | $ 1,560 | $ 525 | $ 1,264
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation of property, plant and equipment | 319 | 266 | 317
Write-down (reverse of write down) for doubtful receivables | (66) | 60 |
Write-down of inventories | 45 | 41 | 25
Write-down of property, plant and equipment | 113 |  | 117
Gain on disposal of property, plant and equipment | (50) |  |
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 1,246 | 858 | (1,378)
Inventories | (580) | (834) | 687
Prepaid expenses and other current assets | 17 | 286 | 249
Accounts payable | (1,507) | 1,040 | (291)
Accrued expenses and other current liabilities | 852 | 99 | 195
Income tax payable | 439 | (121) | 103
Long-term deposits |  | 4 | (32)
Net cash provided by operating activities | 2,388 | 2,224 | 1,256
Cash flows from investing activities: |  |  |
Purchase of property, plant and equipment | (271) | (197) | (524)
Proceeds from disposal of property, plant and equipment | 129 |  | 60
Net cash used in investing activities | (142) | (197) | (464)
Cash flows from financing activities: |  |  |
Acquisition of additional interests in a subsidiary |  | (9) |
Cash dividends paid | (1,031) | (1,126) | (1,364)
Net cash used in financing activities | (1,031) | (1,135) | (1,364)
Net (decrease) increase in cash and cash equivalents | 1,215 | 892 | (572)
Cash and cash equivalents at the beginning of year | 10,028 | 9,140 | 9,727
Effect of exchange rate changes on cash and cash equivalents | 24 | (4) | (15)
Cash and cash equivalents at the end of year | 11,267 | 10,028 | 9,140
Supplemental cash flow information: |  |  |
Income taxes | $ 35 | $ 350 | $ 120

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