Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities:
Net income	$ 2,985	$ 3,575
Adjustments to reconcile net income to net cash provided by operating activities, net of assets acquired and liabilities assumed:
Depreciation and amortization	3,784	4,809
Provision for receivable allowances	1,407	2,617
Net change in inventory provision	300	865
Stock-based compensation	739	681
Loss on investments	147	12
Foreign currency adjustments on intercompany amounts and other non-cash items	248	(169)
Changes in operating assets and liabilities, net of business acquired:
Accounts receivable	(630)	(2,999)
Inventories	611	(3,943)
Prepaid expenses and other current assets	(516)	5,453
Other assets	(263)	930
Accounts payable	609	330
Accrued expenses and other liabilities	329	2,320
Pension liabilities	(301)	(320)
Net cash provided by operating activities	9,449	14,161
Cash flows from investing activities:
Change in restricted cash	(5)	(611)
Purchase of business, net of cash and cash equivalents acquired	(14,571)	(2,297)
Purchases of property and equipment	$ (3,696)	(3,423)
Proceeds from sale of investments		54
Net cash used in investing activities	$ (18,272)	(6,277)
Cash flows from financing activities:
Principal payments on capital lease obligations	(321)	(676)
Repayments of loans and notes payable	$ (449)	(296)
Installment payment for business acquisition		$ (15,000)
Proceeds from loans	$ 3,317
Proceeds from employee equity plans	$ 2,468	$ 811
Payment of cash dividends to stockholders		(943)
Net cash provided by (used in) financing activities	$ 5,015	(16,104)
Effect of exchange rate fluctuations on cash and cash equivalents	860	(59)
Net decrease in cash and cash equivalents	(2,948)	(8,279)
Cash and cash equivalents at beginning of period	121,164	98,438
Cash and cash equivalents at end of period	$ 118,216	$ 90,159