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Fair Value Measurements - Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
ASSETS      
Proceeds from maturities of U.S. Treasury bills $ 166,832 $ 0  
Investments in U.S. Treasury bills 99,780   $ 266,963
US Treasury Bill Securities      
ASSETS      
Accreted value 99,881   267,809
Proceeds from maturities of U.S. Treasury bills 170,000    
Purchase of U.S. Treasury bills     364,238
Investments in U.S. Treasury bills     370,000
Proceeds from U.S. Treasuries     100,000
Recurring      
ASSETS      
Total assets 124,437   296,314
Recurring | US Treasury Bill Securities      
ASSETS      
Investments in U.S. Treasury bills 99,780   266,963
Recurring | Interest rate swap      
ASSETS      
Interest rate derivatives (included in other assets) 24,657   29,351
Recurring | Level 1      
ASSETS      
Total assets 99,780   266,963
Recurring | Level 1 | US Treasury Bill Securities      
ASSETS      
Investments in U.S. Treasury bills 99,780   266,963
Recurring | Level 1 | Interest rate swap      
ASSETS      
Interest rate derivatives (included in other assets) 0   0
Recurring | Level 2      
ASSETS      
Total assets 24,657   29,351
Recurring | Level 2 | US Treasury Bill Securities      
ASSETS      
Investments in U.S. Treasury bills 0   0
Recurring | Level 2 | Interest rate swap      
ASSETS      
Interest rate derivatives (included in other assets) 24,657   29,351
Recurring | Level 3      
ASSETS      
Total assets 0   0
Recurring | Level 3 | US Treasury Bill Securities      
ASSETS      
Investments in U.S. Treasury bills 0   0
Recurring | Level 3 | Interest rate swap      
ASSETS      
Interest rate derivatives (included in other assets) $ 0   $ 0