Mortgage-Backed Securities - Gross Unrealized Losses (Details) $ in Thousands	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Investments [Line Items]
Allowance for credit loss	$ 0	$ 0
Agency MBS
Investments [Line Items]
Fair value, Less than 12 Months	0	920
Gross Unrealized Losses, Less than 12 Month	$ 0	$ (3)
Number of Securities, Less than 12 Months	0	3
Fair value, 12 Months or Longer	$ 748,866	$ 814,443
Gross Unrealized Losses, 12 Months or Longer	$ (151,692)	$ (175,497)
Number of Securities, 12 Months or Longer	58	65
Non-Agency MBS
Investments [Line Items]
Fair value, Less than 12 Months	$ 826	$ 823
Gross Unrealized Losses, Less than 12 Month	$ (19)	$ (73)
Number of Securities, Less than 12 Months	3	2
Fair value, 12 Months or Longer	$ 2,509	$ 6,097
Gross Unrealized Losses, 12 Months or Longer	$ (65)	$ (200)
Number of Securities, 12 Months or Longer	5	10