Marketable Securities

12 Months Ended

Apr. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]

7. Marketable Securities

The cost, gross unrealized gains, gross unrealized losses and fair market value of available-for-sale securities at April 30, 2023 and 2022, respectively, were as follows (in thousands):

	April 30, 2023
	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Market Value
Fixed income securities	$	-	$	-	$	-	$	-

	April 30, 2022
	Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Market Value
Fixed income securities	$	10,403	$	23	$	(462	)	$	9,964

The following table presents the fair value and unrealized losses, aggregated by investment type and length of time that individual securities have been in a continuous unrealized loss position (in thousands):

	Less than 12 months					12 Months or more					Total
	Fair Value		Unrealized Losses			Fair Value		Unrealized Losses			Fair Value		Unrealized Losses
April 30, 2023
Fixed Income Securities	$	-	$	-		$	-	$	-		$	-	$	-
April 30, 2022
Fixed Income Securities	$	2,349	$	(146	)	$	5,573	$	(316	)	$	7,922	$	(462	)

The Company liquidated all holdings related to Marketable Securities during the fiscal year ended April 30, 2023.

Proceeds from the sale or redemption of available-for-sale securities and the resulting gross realized gains and losses included in the determination of net income (loss) for the years ended April 30, 2023 and 2022, respectively, were as follows (in thousands):

	For the years ended April 30,
	2023			2022
Proceeds	$	10,967		$	2,089
Gross realized gains	$	-		$	6
Gross realized losses	$	(784	)	$	-

The fair value accounting framework provides a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements).

The levels of the fair value hierarchy are described below:

Level 1	Inputs to the valuation methodology are unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access.
Level 2	Inputs to the valuation methodology include: -Quoted prices for similar assets or liabilities in active markets; -Quoted prices for identical or similar assets or liabilities in inactive markets; -Inputs other than quoted prices that are observable for the asset or liability; and -Inputs that are derived principally from or corroborated by observable market data by correlation or other means.
Level 3	Inputs to the valuation methodology are unobservable and significant to the fair value measurement.

The asset’s or liability’s fair value measurement level within the fair value hierarchy is based on the lowest level of any input that is significant to the fair value measurement. Valuation techniques used need to maximize the use of observable inputs and minimize the use of unobservable inputs. The Company’s money market, business account, and U.S. securities were valued on a Level 1 basis. The Company’s fixed income corporate debt securities and certificates of deposit were valued on a Level 2 basis. Level 2 securities were valued at the closing prices and are consistent with quoted prices of similar assets reported in active markets.