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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Mar. 31, 2015
Cash flows from operating activities: |  |  |
Net income | $ 11,183 | $ 11,169 | $ 9,583
Depreciation and amortization | 8,737 | 7,174 | 5,656
Gain on dispositions, net |  |  | 16
Deferred income taxes | (630) | (807) | 450
Stock-based compensation | 1,411 | 1,327 | 993
Foreign currency adjustments | 93 | 53 | (176)
Change in assets and liabilities, net of effects of acquisitions and dispositions |  |  |
Accounts receivable, net | 994 | (1,958) | (2,291)
Inventories, net | 295 | (1,202) | (3,164)
Prepaid expenses and other | (830) | 391 | 772
Accounts payable | (655) | (150) | 410
Accrued liabilities and taxes payable | (3,066) | 2,865 | (861)
Unearned revenues | (228) | 99 | (572)
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability | (9,554) | (2,058) |
Net cash provided by operating activities | 7,750 | 16,903 | 10,816
Cash flows from investing activities: |  |  |
Acquisitions | (6,800) | (24,111) | (20,543)
Purchases of property, plant and equipment | (11,605) | (7,729) | (2,828)
Net cash used in investing activities | (18,405) | (31,840) | (23,371)
Cash flow from financing activities: |  |  |
Proceeds from the issuance of debt | 66,550 | 25,000 | 23,000
Payments on debt | (57,000) | (6,000) | (13,250)
Dividends | (2,355) | (2,303) | (2,182)
Proceeds from the exercise of stock options | 3,513 | 1,923 | 1,504
Net cash provided by financing activities | 10,708 | 18,620 | 9,072
Effect of exchange rate changes on cash and cash equivalents | 72 | (22) | (58)
Net increase (decrease) in cash and cash equivalents | 125 | 3,661 | (3,541)
Cash and cash equivalents at beginning of year | 5,695 | 2,034 | 5,575
Cash and cash equivalents at end of year | 5,820 | 5,695 | 2,034
Cash paid during the year for: |  |  |
Income taxes | 5,605 | 3,951 | 3,345
Interest | 1,384 | 848 | 499
Supplemental non-cash activity: |  |  |
Repayment of employee loans for stock options |  |  | 24
Contingent consideration as part of an acquisition | $ 1,822 | $ 9,271 | $ 412

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