Significant Accounting Policies (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Reclassification [Line Items]
Interest income, operating	$ 3,414	$ 3,352	$ 7,133	$ 6,920
Revenues	165,939	103,849	310,114	186,702
Operating income	$ 23,777	38,415	$ 44,115	55,773
Revision of Prior Period, Reclassification, Adjustment
Reclassification [Line Items]
Interest income, operating		3,400		6,900
Interest income, nonoperating		(3,400)		(6,900)
Revenues		3,400		6,900
Operating income		$ 3,400		$ 6,900