Share-based Payment (Tables)

12 Months Ended

Mar. 31, 2022

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Number and Weighted Average Exercise Prices of Market Performance Options

				2022
	Options outstanding		Exercisable options
	Weighted
	remaining		Weighted	Weighted
	contractual	Number of	number of	average
Exercise	life	options	options	exercise
price	outstanding	outstanding	exercisable	price
$43.40 - $66.85	4.87	67,858	—	—
$66.86 - $71.75	4.35	135,071	29,665	69.30
$71.76 - $82.60	5.18	86,294	60,131	74.55
$82.61 - $181.65	2.61	10,350	7,102	149.45
$181.66 - $232.75	6.50	6,748	5,985	210.00
		306,321	102,883

Summary of Number and Weighted Average Share Prices of DSUs

The number and weighted average share prices of DSUs are as follows:

			2022		2021
		Weighted		Weighted
		average		average
		share	Number of	share	Number of
	Notes	price	DSUs	price	DSUs
DSUs outstanding at April 1, 2022 and 2021		$63.00	3,362	$68.39	3,544
Granted		19.26	3,106	63.00	1,199
Released through the issuance of common shares	14(c)	—	—	68.82	(1,381)
DSUs outstanding at March 31, 2022 and 2021		$66.45	6,468	$63.00	3,362
DSUs exercisable at March 31, 2022 and 2021		$39.93	2,753	$58.50	809

Summary of Number and Weighted Average Share Prices of RSUs

			2022		2021
		Weighted		Weighted
		average		average
		share	Number of	share	Number of
	Notes	price	RSUs	price	RSUs
RSUs outstanding at April 1st, 2022 and 2021		$92.08	95,845	$155.05	59,999
Granted		16.19	111,915	58.50	62,514
Forfeited		51.65	(10,538)	—	—
Released through the issuance of common shares	14(d)	50.53	(108,079)	155.05	(16,414)
Withheld as payment of withholding taxes	14(d)	10.61	(64,105)	155.05	(10,254)
RSUs outstanding at March 31, 2022 and 2021		$59.75	25,038	$92.08	95,845

Summary of Number and Weighted Average Share Prices of Restricted Shares

The number and weighted average share prices of restricted shares are as follows:

			2022		2021
		Weighted		Weighted
		average		average
		share	Number of	share	Number of
	Notes	price	RSUs	price	RSUs
Restricted shares outstanding at April 1st, 2022 and 2021		$—	—	$—	—
Granted		—	—	146.65	1,004
Forfeited		—	—	146.65	(154)
Released through the issuance of common shares	14(e)	—	—	146.65	(850)
Restricted shares outstanding at March 31, 2022 and 2021		$—	—	$—	—
Restricted shares exercisable at March 31, 2022 and 2021		$‒	‒	$‒	‒

Stock Option Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Stock Option Plan

The number and weighted average exercise prices of stock options are as follows:

			2022		2021
		Weighted		Weighted
		average		average
		exercise	Number of	exercise	Number of
	Notes	price	options	price	options
Options outstanding at April 1st, 2022 and 2021		$65.91	121,208	$65.76	229,784
Granted		25.41	286,554	56.91	57,839
Exercised	14(b)	—	—	51.88	(142,193)
Forfeited		37.41	(94,298)	127.32	(24,222)
Expired		89.90	(7,143)	—	—
Options outstanding at March 31, 2022 and 2021		$37.41	306,321	$65.91	121,208
Options exercisable at March 31, 2022 and 2021		$56.68	102,883	$67.23	61,526

Summary of Assumptions Used to Determine Fair Value of Options Granted

The fair value of options granted has been estimated using the Black-Scholes option pricing model and based on the weighted average of the following assumptions for options granted to employees during the twelve-month period ended March 31, 2022 and 2021 as at the date of grant:

	Year ended	Year ended
	March 31, 2022	March 31, 2021
Exercise price and share price	$25.41	$56.91
Dividend yield	—	‒
Risk-free interest	0.94%	0.46%
Estimated life (years)	4.29	3.74
Expected volatility	82.73%	98.65%

Market Performance Options

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Summary of Stock Option Plan

The number and weighted average exercise prices of market performance options are as follows:

			2022		2021
		Weighted		Weighted
		average		average
		exercise	Number of	exercise	Number of
	Notes	price	options	price	options
Options outstanding at April 1, 2021 and 2020		$155.05	157,142	$154.12	157,857
Exercised	14(b)	—	—	40.64	(715)
Options outstanding at March 31, 2022 and 2021		$155.05	157,142	$155.05	157,142
Options exercisable at March 31, 2022 and 2021		$155.05	21,429	$155.05	21,429