CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Available-for-sale securities, allowance for credit losses	$ 0	$ 0
Held-to-maturity, at amortized cost, fair value	$ 318,142	$ 328,011
Common Stock, No Par Value	$ 0	$ 0
Common Stock, Shares Authorized	24,000,000	24,000,000
Common Stock, Shares, Issued	14,811,736	15,170,372
Common Stock, Shares, Outstanding	14,811,736	15,170,372