Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash flows from operating activities:
Net Income	$ 5,362	$ 8,364
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8,597	6,358
Provision for receivable allowances	4,282	6,217
Net change in inventory provision	1,271	337
Foreign currency adjustments on intercompany amounts	418	(470)
Stock-based compensation	1,341	2,131
Loss (gain) on investments and disposal of fixed assets	(186)	31
Changes in operating assets and liabilities:
Accounts receivable	(11,606)	3,468
Inventories	(3,659)	(4,696)
Prepaid expenses and other current assets	(1,936)	(1,239)
Other assets	(706)	415
Accounts payable	6,073	(104)
Accrued expenses and other liabilities	2,772	(2,497)
Pension liabilities	(751)	(433)
Net cash provided by operating activities	11,272	17,882
Cash flows from investing activities:
Change in restricted cash	(17)	(55)
Purchase of business, net of deferred payments	(20,000)	0
Purchases of investments	0	(4,517)
Purchases of property and equipment	(3,929)	(2,780)
Proceeds from sale of investments	324	387
Net cash used in investing activities	(23,622)	(6,965)
Cash flows from financing activities:
Principal payments on capital lease obligations	(1,247)	(1,435)
Repayments of loans and notes payable	(489)	(1,174)
Proceeds from employee equity plans	2,211	762
Purchases of treasury stock	(433)	(2,118)
Payment of cash dividends to stockholders	(1,865)	0
Net cash used in financing activities	(1,823)	(3,965)
Effect of exchange rate fluctuations on cash and cash equivalents	1,960	(869)
Net increase (decrease) in cash and cash equivalents	(12,213)	6,083
Cash and cash equivalents at beginning of period	107,116	98,604
Cash and cash equivalents at end of period	$ 94,903	$ 104,687