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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015 | Mar. 31, 2014
Cash flows from operating activities |  |  |
Net loss | $ (4,934) | $ (2,808) | $ (7,490)
Adjustments to reconcile net loss to net cash provided by operating activities: |  |  |
Depreciation and amortization | 2,373 | 2,824 | 3,621
Provision for doubtful accounts, net | 274 | 73 | (19)
Allowances for obsolete inventories, net | (252) | 341 | 134
Impairment of property, plant and equipment |  |  | 490
(Gain) loss on disposal of property, plant and equipment | 420 | (766) | (392)
Unrealized holding (gain) loss on marketable securities | 1,860 | (954) | 865
Gain on sales of marketable securities | (526) | (102) |
Impairment of goodwill |  |  | 392
Stock-based compensation expenses |  | 199 |
Deferred income tax | 21 | 115 | 277
Changes in operating assets and liabilities: |  |  |
Accounts receivable | 95 | (1,724) | 384
Inventories | 2,966 | (157) | 230
Prepaid expenses and other current assets | 462 | (646) | (322)
Accounts payable | (1,120) | 683 | (479)
Accrued payroll and employee benefits | (193) | (163) | 258
Customer deposits | (1,027) | 670 | 526
Other accrued liabilities | 88 | (36) | (23)
Income taxes payable | 56 | 81 | (330)
Net cash provided by (used in) operating activities | 563 | (2,370) | (1,878)
Cash flows from investing activities |  |  |
Purchase of property, plant and equipment | (591) | (890) | (853)
Proceeds from sale of property, plant and equipment, net of transaction costs | 1,266 | 976 | 1,086
Purchase of marketable securities | (10,349) | (4,455) |
Proceeds from sales of marketable securities | 6,798 | 1,011 |
(Increase in) release of fixed deposits maturing over three months | 4,635 | 1,347 | (2,574)
Increase in fixed deposits maturing over twelve months | (2,965) | (1,601) |
Net cash used in investing activities | (1,206) | (3,612) | (2,341)
Cash flows from financing activities |  |  |
Dividends paid | (1,686) | (2,971) | (3,615)
Proceeds from exercise of stock options |  |  | 493
Repurchase of common stock |  |  | (1,411)
Net cash used in financing activities | (1,686) | (2,971) | (4,533)
Net decrease in cash and cash equivalents | (2,329) | (8,953) | (8,752)
Cash and cash equivalents, beginning of year | 14,325 | 23,278 | 32,030
Cash and cash equivalents, end of year | 11,996 | 14,325 | 23,278
Cash paid during the year for: |  |  |
Interest |  |  |
Income taxes | $ 25 | $ 7 | $ 685

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- Definition Amount of cash outflow to acquire investments classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow associated with the sale of securities classified as trading securities and held for investment purposes. Excludes proceeds from trading securities purchased and held principally for the purpose of selling them in the near term (thus held for only a short period of time). + References No definition available. + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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- Definition Amount of gain (loss) realized from securities classified as trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 + Details
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- Definition Amount of unrealized holding gain (loss) recognized in the income statement for investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 35 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=27723805&loc=d3e24584-111560 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27357-111563 + Details
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