Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Pledged assets, Mortgage-backed securities	$ 10,628,658	$ 5,253,310
U.S. Treasury securities, available for sale, amortized cost	134,715	100,412
Pledged assets, available for sale	$ 135,133	$ 100,551
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, authorized (in shares)	20,000,000	20,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	400,000,000	400,000,000
Common stock, issued (in shares)	181,985,900	82,622,464
Common stock, outstanding (in shares)	181,985,900	82,622,464
Asset Pledged as Collateral [Member]
Pledged assets, Mortgage-backed securities	$ 10,502,743	$ 5,209,068
Pledged assets, available for sale	$ 135,133	$ 100,551