Financial Risk Management and Financial Instruments - Additional Information (Details) $ in Thousands	12 Months Ended
May 31, 2021 USD ($)	May 31, 2020 USD ($)	May 31, 2019 USD ($)
Financial Risk Management And Financial Instruments [Line Items]
Long-term debt, subject to fixed interest rates	$ 20,358	$ 19,398
Cash and cash equivalents	488,466	360,646
Unrealized gain or loss due to change in foreign exchange rate	$ (49,342)	451	$ 194
Hypothetical decrease in fair value of investments	10.00%
Estimated decrease in fair values of investments upon hypothetical decrease of 10% in the prices	$ 1,769
Hypothetical increase in common stock	10.00%
Estimated increase in fair values of warrant liability upon hypothetical increase of 10% in the price of common stock	$ 9,800
Allowance for doubtful accounts	$ 4,571	$ 2,313
Discount Rate
Financial Risk Management And Financial Instruments [Line Items]
Business combination, contingent consideration, liability, measurement input	0.05
Level 3 [Member] \| Discount Rate
Financial Risk Management And Financial Instruments [Line Items]
Business combination, contingent consideration, liability, measurement input	0.05

Estimated decrease in fair values of investments upon hypothetical decrease in prices.

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Estimated increase in fair values of warrant liability on hypothetical increase in prices.

+ References

No definition available.

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Financial risk management and financial instruments.

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Hypothetical decrease in fair value of investments.

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Hypothetical increase in common stock.

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- Definition

Value of input used to measure contingent consideration liability from business combination.

+ References

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement.

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The portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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