Fair Value Measurements Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets:
Purchase of U.S. Treasury bills	$ 364,238	$ 0	$ 0
Investments in U.S. Treasury bills	266,963	0
US Treasury Bill Securities
Assets:
Purchase of U.S. Treasury bills	364,238
Investments in U.S. Treasury bills	370,000
Proceeds from realized net proceeds	100,000
Accreted value	267,809
Recurring
Assets:
Total assets	296,314
Recurring | Level 1
Assets:
Total assets	266,963
Recurring | Level 2
Assets:
Total assets	29,351
Recurring | Level 3
Assets:
Total assets	0
Recurring | US Treasury Bill Securities
Assets:
Investments in U.S. Treasury bills	266,963
Recurring | US Treasury Bill Securities | Level 1
Assets:
Investments in U.S. Treasury bills	266,963
Recurring | US Treasury Bill Securities | Level 2
Assets:
Investments in U.S. Treasury bills	0
Recurring | US Treasury Bill Securities | Level 3
Assets:
Investments in U.S. Treasury bills	0
Recurring | Interest rate swap
Assets:
Interest rate derivatives (included in other assets)	29,351	7,545
Recurring | Interest rate swap | Level 1
Assets:
Interest rate derivatives (included in other assets)	0	0
Recurring | Interest rate swap | Level 2
Assets:
Interest rate derivatives (included in other assets)	29,351	7,545
Recurring | Interest rate swap | Level 3
Assets:
Interest rate derivatives (included in other assets)	$ 0	$ 0