Statement of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net Income	$ 3,575	$ 1,979
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	4,809	2,722
Provision for receivable allowances	2,617	1,672
Net change in inventory provision	865	765
Foreign currency adjustments on intercompany amounts	(169)	(110)
Stock-based compensation	681	671
Loss (gain) on investments and disposal of fixed assets	12	(140)
Changes in operating assets and liabilities, net of business acquired:
Accounts receivable	(2,999)	(4,466)
Inventories	(3,943)	(2,198)
Prepaid expenses and other current assets	5,453	(273)
Other assets	930	(13)
Accounts payable	330	(80)
Accrued expenses and other liabilities	2,320	(433)
Pension liabilities	(320)	(336)
Net cash provided by (used in) operating activities	14,161	(240)
Cash flows from investing activities:
Change in restricted cash	(611)	(4)
Purchase of business, net of cash and cash equivalents acquired and deferred payments	(2,297)	(20,000)
Purchases of property and equipment	(3,423)	(1,566)
Proceeds from sale of investments	54	324
Net cash used in investing activities	(6,277)	(21,246)
Cash flows from financing activities:
Principal payments on capital lease obligations	(676)	(616)
Repayments of loans and notes payable	(296)	(243)
Repayments of deferred payment of business acquisition	(15,000)	0
Proceeds from employee equity plans	811	1,349
Payment of cash dividends to stockholders	(943)	(931)
Net cash used in financing activities	(16,104)	(441)
Effect of exchange rate fluctuations on cash and cash equivalents	(59)	640
Net increase (decrease) in cash and cash equivalents	(8,279)	(21,287)
Cash and cash equivalents at beginning of period	98,438	107,116
Cash and cash equivalents at end of period	90,159	85,829
Supplemental disclosure of noncash investing activities:
Deferred payments of business acquisition	$ 0	$ 30,000