Resale and Repurchase Agreements (Remaining Contractual Maturities of Repurchase Agreements) (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
US Treasury and Government [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	$ 503,061	$ 518,937
US Government-sponsored Enterprise Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	10,539	9,969
Agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	1,679,278	1,673,006
Non-agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	21,970	24,273
Asset-backed Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	504,709	511,691
Other Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	141,459	65,167
Repurchase Agreements [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	2,861,016	2,803,043
Maturity Overnight [Member] | US Treasury and Government [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	503,061	518,937
Maturity Overnight [Member] | US Government-sponsored Enterprise Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	10,539	9,969
Maturity Overnight [Member] | Agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	1,647,928	1,641,156
Maturity Overnight [Member] | Non-agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	21,970	24,273
Maturity Overnight [Member] | Asset-backed Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	453,827	462,841
Maturity Overnight [Member] | Other Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	141,459	65,167
Maturity Overnight [Member] | Repurchase Agreements [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	2,778,784	2,722,343
Maturity up to 90 days [Member] | US Treasury and Government [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity up to 90 days [Member] | US Government-sponsored Enterprise Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity up to 90 days [Member] | Agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	4,600	9,600
Maturity up to 90 days [Member] | Non-agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity up to 90 days [Member] | Asset-backed Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	29,656	30,623
Maturity up to 90 days [Member] | Other Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity up to 90 days [Member] | Repurchase Agreements [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	34,256	40,223
Maturity Greater than 90 Days [Member] | US Treasury and Government [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity Greater than 90 Days [Member] | US Government-sponsored Enterprise Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity Greater than 90 Days [Member] | Agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	26,750	22,250
Maturity Greater than 90 Days [Member] | Non-agency mortgage-backed securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity Greater than 90 Days [Member] | Asset-backed Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	21,226	18,227
Maturity Greater than 90 Days [Member] | Other Debt Securities [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	0	0
Maturity Greater than 90 Days [Member] | Repurchase Agreements [Member]
Schedule of Underlying Assets of Repurchase Agreements [Line Items]
Assets Sold under Agreements to Repurchase, Repurchase Liability	$ 47,976	$ 40,477