Loan Payable (Tables)

12 Months Ended

Apr. 30, 2020

Disclosure Of Loans And Advances And Deposits [Abstract]

Summary of Valuation Assumptions Used to Determine Fair Value of Warrants

The Company determined a value of $171 on the warrants, which was included in the Discount, based on the Black-Scholes model with the following assumptions:

Stock price	$	0.17
Exercise price	$	0.20
Dividend rate		0	%
Expected Life	3 years
Expected annual volatility		56	%
Risk-free rate		1.45	%

Disclosure of loans repayable

Changes to the loans payable balance during the year ending April 30, 2019 and the year ending April 30, 2020 are as follows:

	Principal			Interest			Discount			Total
Balance, April 30, 2018	$	1,282		$	52		$	-		$	1,334
Financing, June 18, 2018		3,000			-			(231	)		2,769
Discount		-			-			101			101
Interest accrual		-			325			-			325
Foreign exchange adjustment		59			-			-			59
Balance, April 30, 2019		4,341			377			(130	)		4,588
Discount		-			-			115			115
Interest paid		-			(514	)		-			(514	)
Interest accrual		-			349			-			349
Loan repayment		(1,411	)		-			-			(1,411	)
Foreign exchange adjustment		69			-			-			69
Balance, April 30, 2020	$	2,999		$	212		$	(15	)	$	3,196

	April 30, 2020		April 30, 2019
Current	$	3,196	$	1,507
Non-Current	$	-	$	3,081
	$	3,196	$	4,588

Disclosure of financing costs

The Company’s financing costs for the year ended April 30, 2020, 2019, and 2018 as reported on its Consolidated Statement of Operations and Comprehensive Loss can be summarized as follows:

For the year ended April 30,	2020			2019			2018
Unwinding of discount on rehabilitation and closure accretion (note 12)	$	72		$	90		$	64
Discount unwinding on debt repaid (note 11)		115			101			-
Lease accretion		23			-			-
San Pedrito Interest (note 8)		-			(159	)		-
Interest on diesel equipment lease		3			21			-
Interest expense on debt (note 11)		349			325			83
Interest revenue		(8	)		(67	)		(86	)
	$	554		$	311		$	61