Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Investment securities [Abstract]
Investment Securities, Fair Value	$ 1,788,030	$ 1,817,929
Real estate and other repossessed assets, allowance	$ (5,889)	$ (5,537)
Shareholders' equity: [Abstract]
Common Stock, Par or Stated Value Per Share	$ 0.00006
Common Stock, Shares Authorized	2,500,000,000	2,500,000,000
Common Stock, Shares, Issued	(77,014,720)	(76,817,607)
Common Stock, Shares, Outstanding	(77,014,720)	(76,817,607)
Treasury stock, shares at cost (in shares)	12,752,896	12,696,308
Loans, net of allowance	$ 23,411,894	$ 23,834,689