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Summary of Significant Accounting Policies - Letters of Credit Facility (Details) - Credit Agreement - Wells Fargo Bank
3 Months Ended
Jun. 30, 2022
USD ($)
Line of Credit Facility [Line Items]  
Borrowings outstanding $ 0
Line of credit facility, maximum borrowing capacity 40,000,000
Stand-by letters of credit $ 5,700,000
Standby Letter of Credit  
Line of Credit Facility [Line Items]  
Commitment fee 1.75%