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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Operating activities: |  |
Net income (loss) | $ 4,245 | $ (10,677)
Adjustments to reconcile net income (loss) to net cash provided by operating activities: |  |
Depreciation | 1,469 | 1,490
Amortization | 178 | 177
Amortization of unrecognized prior service cost and actuarial losses | 655 | 788
Impairment of goodwill and intangible assets |  | 14,816
Stock-based compensation expense | 797 | 362
Loss on disposal or sale of property, plant and equipment | 30 | 1
Deferred income taxes | 128 | (3,498)
(Increase) decrease in operating assets: |  |
Accounts receivable | 3,050 | (5,029)
Unbilled revenue | (2,011) | 5,170
Inventories | 1,813 | 352
Prepaid expenses and other current and non-current assets | (773) | (591)
Income taxes receivable | 770 | (1,605)
Prepaid pension asset | (893) | (770)
Increase (decrease) in operating liabilities: |  |
Accounts payable | (8,136) | (1,005)
Accrued compensation, accrued expenses and other current and non-current liabilities | 946 | (1,593)
Customer deposits | 6,177 | 5,400
Long-term portion of accrued compensation, accrued pension liability and accrued postretirement benefits | 90 | 86
Net cash provided by operating activities | 8,535 | 3,874
Investing activities: |  |
Purchase of property, plant and equipment | (1,471) | (543)
Proceeds from disposal of property, plant and equipment |  | 1
Purchase of investments | (101,343) | (34,023)
Redemption of investments at maturity | 73,633 | 30,000
Net cash used by investing activities | (29,181) | (4,565)
Financing activities: |  |
Principal repayments on capital lease obligations | (81) | (78)
Issuance of common stock | 171 |
Dividends paid | (2,851) | (2,638)
Purchase of treasury stock | (146) | (119)
Net cash used by financing activities | (2,907) | (2,835)
Effect of exchange rate changes on cash | (228) | 211
Net decrease in cash and cash equivalents | (23,781) | (3,315)
Cash and cash equivalents at beginning of year | 40,456 | 39,474
Cash and cash equivalents at end of period | $ 16,675 | $ 36,159

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