Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Available-for-Sale, Amortized Cost	$ 1,402,389	$ 1,459,862
Held to Maturity, Fair Value, Total	$ 1,383,621	$ 1,417,608
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, Outstanding	42,452,457	42,873,187
Common Stock, Shares, Issued	42,452,457	42,873,187
Common Stock, unvested restricted Stock awards	215,412	162,812
Shares Held in Rabbi Trust	82,042	80,222
Junior Subordinated Debt [Member]
Unamortized debt issuance expense	$ 30	$ 30
Subordinated Debt [Member]
Unamortized debt issuance expense		$ 20