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Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Fair Value, Recurring - USD ($)
$ / shares in Units, $ in Thousands
Mar. 31, 2022
Mar. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets $ 219,841 $ 70,009
Total liabilities   $ 21,636
Stock options remeasured (in shares) 1,281,803  
Share price (in USD per share) $ 13.32 $ 20.58
Stock options    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   $ 12,113
Common Shares    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   $ 9,523
Shares remeasured (in shares)   462,705
Money Market Funds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets $ 69 $ 36,903
Commercial Paper    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 219,772 21,689
Cash and cash equivalents 192,300 12,700
Marketable securities 27,500 9,000
U.S. agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   10,000
Municipal Bonds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   1,417
Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 69 36,903
Total liabilities   9,523
Level 1 | Stock options    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   0
Level 1 | Common Shares    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   9,523
Level 1 | Money Market Funds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 69 36,903
Level 1 | Commercial Paper    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Level 1 | U.S. agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   0
Level 1 | Municipal Bonds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   0
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 219,772 33,106
Total liabilities   12,113
Level 2 | Stock options    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   12,113
Level 2 | Common Shares    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   0
Level 2 | Money Market Funds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Level 2 | Commercial Paper    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 219,772 21,689
Level 2 | U.S. agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   10,000
Level 2 | Municipal Bonds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   1,417
Level 3    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Total liabilities   0
Level 3 | Stock options    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   0
Level 3 | Common Shares    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Share-based compensation liabilities   0
Level 3 | Money Market Funds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets 0 0
Level 3 | Commercial Paper    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets $ 0 0
Level 3 | U.S. agency securities    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   0
Level 3 | Municipal Bonds    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Total assets   $ 0