Mergers and Acquisitions - Consideration Transferred, Identifiable Net Assets Acquired and Goodwill Recognized (Details) - USD ($)	Jan. 31, 2024	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023	Dec. 31, 2022
Liabilities assumed
Goodwill recognized		$ 1,023,762,000	$ 985,393,000	$ 985,393,000	$ 985,393,000
Community Financial Group, Inc.
Fair value of consideration transferred
Fair value of Company shares issued	$ 92,385,000
Cash consideration	771,000
Total fair value of consideration transferred	93,156,000
Identifiable assets acquired
Cash and cash equivalents	31,674,000
Debt securities	187,183,000
Loans receivable, net of ACL	452,737,000
Core deposit intangible	16,936,000
Accrued income and other assets	50,760,000
Total identifiable assets acquired	739,290,000
Liabilities assumed
Deposits	616,955,000
Borrowings	58,500,000
Accrued expenses and other liabilities	9,048,000
Total liabilities assumed	684,503,000
Total identifiable net assets	54,787,000
Goodwill recognized	$ 38,369,000
Core deposit intangible, estimated life	10 years