Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Statement of Financial Position [Abstract]
Amortized Cost	$ 3,547,987	$ 3,642,809
Common stock, Class A, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, Class A, shares authorized (in shares)	350,000,000	350,000,000
Common stock, Class A, shares issued (in shares)	145,058,545	144,762,817
Common stock, Class A, shares outstanding (in shares)	145,058,545	144,762,817