Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 6,954	$ 6,258
Adjustments to reconcile net income to net cash provided by operating activities, net of assets acquired and liabilities assumed:
Depreciation and amortization	5,367	7,145
Provision for receivable allowances	4,517	2,903
Net change in inventory provision	593	703
Stock-based compensation	1,729	1,691
Loss (gain) on investments	(552)	650
Foreign currency adjustments on intercompany amounts and other non-cash items	(79)	719
Changes in operating assets and liabilities, net of business acquired:
Accounts receivable	(5,242)	1,239
Inventories	(2,112)	(3,218)
Prepaid expenses and other assets	(326)	(702)
Accounts payable	(86)	(583)
Accrued expenses and other liabilities	3,021	1,772
Pension liabilities	(386)	(617)
Net cash provided by operating activities	13,398	17,960
Cash flows from investing activities:
Change in restricted cash	3	(879)
Purchase of businesses, net of cash and cash equivalents acquired and installment payments		(14,571)
Purchases of investments	(2,000)	(29)
Purchases of plant and equipment	(5,156)	(4,445)
Proceeds from sale of investments	805	50
Net cash used in investing activities	(6,348)	(19,874)
Cash flows from financing activities:
Principal payments on capital lease obligations		(419)
Repayments of loans and notes payable	(8,229)	(937)
Proceeds from loans		3,317
Proceeds from employee equity plans	1,355	3,431
Purchases of treasury stock		(6,440)
Payment of cash dividends to stockholders	(1,258)	(2,374)
Net cash used in financing activities	(8,132)	(3,422)
Effect of exchange rate fluctuations on cash and cash equivalents	(920)	1,023
Net decrease in cash and cash equivalents	(2,002)	(4,313)
Cash and cash equivalents at beginning of period	155,806	121,164
Cash and cash equivalents at end of period	$ 153,804	$ 116,851