Note 4 Fair Value (Tables)

6 Months Ended

Sep. 30, 2013

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

			September 30, 2013 (1)						March 31, 2013 (1)
					Fair Value Measured at						Fair Value Measured at
					Reporting Date Using						Reporting Date Using
Description			Total		Level 1		Level 2		Total		Level 1		Level 2
			(unaudited)						(unaudited)
Money market funds (2)			$	52,874	$	52,874	$	-	$	67,959	$	67,959	$	-
Marketable equity securities (3)				3,738		3,738		-		4,116		4,116		-
Auction rate preferred securities (3)				350		-		350		350		-		350
Derivative liabilities (4)				(154)		-		(154)		(198)		-		(198)
	Total		$	56,808	$	56,612	$	196	$	72,227	$	72,075	$	152
(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 unaudited condensed consolidated balance sheets.
(4)		Included in "Accrued expenses and other current liabilities" on our unaudited condensed consolidated balance sheets.