Note 3 Fair Value (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013		Mar. 31, 2012		Mar. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable Equity Securities	$ 4,116		$ 1,064
Auction Rate Preferred Securities	350		350
Goodwill, Impairment Loss	0		6,448		702
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds	67,959	[1],[2]	69,369	[1],[2]
Marketable Equity Securities	4,116	[1],[3]	1,064	[1],[3]
Auction Rate Preferred Securities	350	[1],[3]	350	[1],[3]
Derivative Liabilities	(198)	[1],[4]	(203)	[1],[4]
Total	72,227	[1]	70,580	[1]
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Goodwill, Impairment Loss			(6,448)
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money Market Funds	67,959	[1],[2]	69,369	[1],[2]
Marketable Equity Securities	4,116	[1],[3]	1,064	[1],[3]
Total	72,075	[1]	70,433	[1]
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Auction Rate Preferred Securities	350	[1],[3]	350	[1],[3]
Derivative Liabilities	(198)	[1],[4]	(203)	[1],[4]
Total	$ 152	[1]	$ 147	[1]

[1] We did not have any recurring assets whose fair value was measured using significant unobservable inputs.

[2] Included in "Cash and cash equivalents" on our unaudited condensed consolidated balance sheets.

[3] Included in "Other assets" on our consolidated balance sheets.

[4] Included in ''Accrued expenses and other current liabilities'' on our consolidated balance sheets.