Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Net Cash Provided By Used In Operating Activities Abstract
Net income (loss)	$ 17,970	$ (38,493)
Income from discontinued operations	(409)	(261)
Depreciation and amortization	8,609	8,257
Deferred income taxes and related valuation allowance	378	39,846
Gain on sale of real estate/investments	(1,909)	(991)
Business Combination Step Acquisition Equity Interest In Acquiree Remeasurement Gain Or Loss	(850)	0
Stock-based compensation	2,246	1,347
Amortization of deferred financing costs	289	208
Increase Decrease In Operating Capital Abstract
Trade accounts receivable	(775)	514
Inventories	(14,011)	(18,251)
Prepaid expenses	2,440	(2,836)
Other assets	332	268
Trade accounts payable	927	(1,363)
Accrued and non-current liabilities	(1,774)	(5,254)
Net Cash Provided By Used In Operating Activities	13,463	(17,009)
Net Cash Provided By Used In Investing Activities Abstract
Proceeds from sale of marketable securities	5,747	8,316
Purchases of marketable securities	4,503	1,830
Capital expenditures	10,464	8,859
AcquisitionCosts	(3,356)	0
Proceeds from sale of businesses or assets	1,971	1,182
Net cash used for investing activities from continuing operations	(10,605)	(1,191)
Net cash provided by investing activities from discontinued operations	409	261
Net cash used for investing activities	(10,196)	(930)
Net Cash Provided By Used In Financing Activities Abstract
Proceeds from exercise of stock options	1,733	4
The net cash inflow (outflow) in other borrowings not otherwise defined in the taxonomy.	(238)	(290)
Repayments Of Long Term Debt And Capital Securities	(488)	(835)
Other	324	334
Net cash provided by (used) for financing activities	1,331	(787)
Effect Of Exchange Rate On Cash And Cash Equivalents	(2,704)	848
Cash And Cash Equivalents Period Increase Decrease	1,894	(17,878)
Cash And Cash Equivalents At Carrying Value - Beginning of Period	80,139	63,968
Cash And Cash Equivalents At Carrying Value - End of Period	82,033	46,090
Supplemental Cash Flow Information Abstract
Interest Paid	10,202	11,831
Income Taxes Paid	$ 5,272	$ 3,278