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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 (loss) income $ (2,962) $ 11,183 $ 11,169
Depreciation and amortization 9,471 8,737 7,174
Gain on sale of assets (116)
Deferred income taxes (2,704) (630) (807)
Stock-based compensation 1,672 1,411 1,327
Foreign currency adjustments (490) 93 53
Amortization of debt issuance costs 110
Change in inventory reserve 2,474 194 305
Impairment loss on goodwill 13,819
Adjustment to contingent consideration 300
Change in assets and liabilities, net of effects of acquisitions and dispositions      
Accounts receivable, net 680 994 (1,958)
Inventories, net 2,286 101 (1,507)
Prepaid expenses and other 755 (830) 391
Accounts payable 212 (655) (150)
Accrued liabilities and taxes payable 408 (3,066) 2,865
Unearned revenues (196) (228) 99
Contingent consideration (905) (9,554) (2,058)
Net cash provided by operating activities 24,814 7,750 16,903
Cash flows from investing activities:      
Acquisitions (15,518) (6,800) (24,111)
Proceeds from sale of assets 1,133
Purchases of property, plant and equipment (2,799) (11,605) (7,729)
Net cash used in investing activities (17,184) (18,405) (31,840)
Cash flow from financing activities:      
Proceeds from the issuance of debt 11,000 66,550 25,000
Payments on debt (19,625) (57,000) (6,000)
Dividends (2,413) (2,355) (2,303)
Proceeds from the exercise of stock options 2,919 3,513 1,923
Net cash (used in) provided by financing activities (8,119) 10,708 18,620
Effect of exchange rate changes on cash and cash equivalents 138 72 (22)
Net (decrease) increase in cash and cash equivalents (351) 125 3,661
Cash and cash equivalents at beginning of year 5,820 5,695 2,034
Cash and cash equivalents at end of year 5,469 5,820 5,695
Cash paid during the year for:      
Income taxes 4,551 5,605 3,951
Interest 1,956 1,384 848
Supplemental non-cash activity:      
Contingent consideration as part of an acquisition $ 1,822 $ 9,271