Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale, Amortized Cost	$ 1,459,862	$ 1,566,779
Securities held to maturity, fair value	$ 1,417,608	$ 1,524,710
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	42,873,187	45,641,238
Common stock, shares outstanding	42,873,187	45,641,238
Common stock, unvested restricted Stock awards	162,812	135,712
Shares held in rabbit trust at cost	80,222	80,965
Subordinated Debt [Member]
Unamortized Debt Issuance Expense	$ 20	$ 115
Junior Subordinated Debt [Member]
Unamortized Debt Issuance Expense	$ 30	$ 33