Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Assets
Securities available-for-sale, amortized cost	$ 1,900,980,000	$ 1,959,007,000
Securities available-for-sale, allowance for credit Losses (ACL)	0	0
Securities held to maturity, net of ACL	0	0
Securities held to maturity, fair value	$ 1,333,014,000	$ 1,355,504,000
Shareholders' Equity
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	250,000,000	250,000,000
Common stock, issued (in shares)	61,178,366	61,071,173
Common stock, outstanding (in shares)	61,178,366	61,071,173