Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities:
Net income	$ 6,733	$ 7,020
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,708	2,992
Deferred income taxes and related valuation allowance	(337)	(786)
Gain on sale of real estate, investments, and other	(56)	(347)
Stock-based compensation	836	717
Amortization of deferred financing costs and discount on subordinated debt	217	171
Changes in operating assets and liabilities, net of effects of business acquisition:
Trade accounts receivable	11,686	4,854
Inventories	(4,948)	(6,961)
Prepaid expenses	456	(3,724)
Other assets	439	865
Trade accounts payable	(5,976)	(4,550)
Increase (Decrease) in Accrued Liabilities	(3,839)	408
Non-current liabilities	(2,448)	(2,567)
Net cash provided by operating activities	6,471	(1,908)
INVESTING ACTIVITIES:
Proceeds from sale of marketable securities	416	952
Purchases of marketable securities	(764)	(1,613)
Capital expenditures	(4,616)	(3,614)
Purchase of business	0	(5,847)
Net cash used for investing activities	(4,964)	(10,122)
FINANCING ACTIVITIES:
Proceeds from exercise of stock options	1,051	412
Net payments under lines-of-credit		(266)
Repayment of debt	(332)	(266)
Change in ESOP guarantee	101	104
Dividends, Cash	(793)	0
Net cash provided by (used for) financing activities	27	250
Effect of exchange rate changes on cash	242	519
Net change in cash and cash equivalents	1,776	(11,261)
Cash and cash equivalents at beginning of period	112,309	121,660
Cash and cash equivalents at end of period	114,085	110,399
Supplementary cash flow data:
Interest paid	265	367
Income taxes paid, net of refunds	$ 1,808	$ 2,131