Statements of Cash Flows - Cash Flows Supplementary Disclosures (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Statement of cash flows specific transaction amounts [Abstract]
Income taxes paid	$ 40,639	$ 19,887
Interest expense paid on deposits and borrowings	237,425	296,939
Noncash transfers from loans to other real estate	6,754	4,703
Operating right-of-use assets resulting from lease liabilities	$ 1,623	$ 1,831