Investment Securities, Securities Held-to-Maturity (Details) - USD ($) $ in Thousands		Mar. 31, 2025		Dec. 31, 2024		Dec. 31, 2023
Book Values, Estimated Fair Values and Unrealized Gains and Losses of Investments Classified as Held-to-maturity [Abstract]
Amortized cost		$ 759,771		$ 769,443
Gross unrecognized gains		650		46
Gross unrecognized losses		145,558		158,536
Fair value		614,863		610,953
Allowance for credit losses		450		450		$ 450
Mortgage-backed Securities [Member]
Book Values, Estimated Fair Values and Unrealized Gains and Losses of Investments Classified as Held-to-maturity [Abstract]
Amortized cost	[1]	617,929		626,427
Gross unrecognized gains	[1]	6		0
Gross unrecognized losses	[1]	131,406		143,544
Fair value	[1]	486,529		482,883
Allowance for credit losses		0	[1]	0	[1]	0
Collateralized Mortgage Obligations [Member]
Book Values, Estimated Fair Values and Unrealized Gains and Losses of Investments Classified as Held-to-maturity [Abstract]
Amortized cost	[1]	66,965		68,377
Gross unrecognized gains	[1]	0		0
Gross unrecognized losses	[1]	12,398		13,876
Fair value	[1]	54,567		54,501
Allowance for credit losses		0	[1]	0	[1]	0
Municipal Securities [Member]
Book Values, Estimated Fair Values and Unrealized Gains and Losses of Investments Classified as Held-to-maturity [Abstract]
Amortized cost		74,877		74,639
Gross unrecognized gains		644		46
Gross unrecognized losses		1,754		1,116
Fair value		73,767		73,569
Allowance for credit losses		$ 450		$ 450		$ 450

[1] All mortgage-backed securities and collateralized mortgage obligations were issued by an agency or government sponsored entity of the U.S. Government.