Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Investments, fair value	$ 572,749	$ 421,393
Other assets, fair value	0	11,793
Other liabilities, fair value	$ 124,019	$ 183,628
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, liquidation preference	$ 821,899	$ 827,779
Preferred stock, shares authorized (in shares)	250,000,000	250,000,000
Preferred stock, shares issued (in shares)	32,876,000	33,111,000
Preferred stock, shares outstanding (in shares)	32,876,000	33,111,000
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.04
Common stock, shares authorized (in shares)	237,250,000	237,250,000
Common stock, shares issued (in shares)	163,209,000	159,763,000
Common stock, shares outstanding (in shares)	163,209,000	159,763,000
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.01	$ 0.04
Common stock, shares authorized (in shares)	250,000	250,000
Common stock, shares issued (in shares)	166,000	166,000
Common stock, shares outstanding (in shares)	166,000	166,000