Derivatives - Derivative Information about Carrying Value by Type on the Balance Sheet Location (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative assets	$ 8,461	$ 54,361
Derivative liabilities	2,032	0
Margin Deposit Assets	122,200	118,200
Variation Margin Receivable, Derivative	20,400	1,300
TBA securities | Long position
Derivative [Line Items]
Derivative assets	8,461	54,361
Derivative liabilities	2,032	0
U.S. Treasury futures
Derivative [Line Items]
Derivative liabilities	34,200	219,900
Interest rate swaps
Derivative [Line Items]
Derivative liabilities	$ 100	$ 0