Repurchase Agreements - Offsetting (Details) - USD ($) $ in Thousands		Sep. 30, 2022	Dec. 31, 2021
Offsetting [Abstract]
Gross Amount of Recognized Liabilities		$ 3,009,269	$ 2,849,916
Gross Amount Offset in the Balance Sheet		0	0
Net Amount of Liabilities Presented in the Balance Sheet		3,009,269	2,849,916
Financial Instruments Posted as Collateral	[1]	(3,009,269)	(2,849,916)
Cash Posted as Collateral		0	0
Net Amount		$ 0	$ 0

[1] Amounts disclosed for collateral received by or posted to the same counterparty include cash and the fair value of MBS up to and not exceeding the net amount of the repurchase agreement liability presented in the balance sheet. The fair value of the total collateral received by or posted to the same counterparty may exceed the amounts presented.