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Fair Value Of Financial Instruments (Tables)

12 Months Ended

Apr. 30, 2013

Fair Value Of Financial Instruments [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis


		Fair value		Fair value measurement using
		April 30, 2013		Level 1		Level 2		Level 3

Common stock warrant liability	$	204	$	-	$	-	$	204

Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation


(in thousands)	Common stock warrants
Balance at April 30, 2011	$	1,623
Change in fair value of common stock warrant liability		(1,054)
Balance at April 30, 2012		569
Change in fair value of common stock warrant liability		(365)
Balance at April 30, 2013	$	204

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

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