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SECURITIES (Tables)
 3 Months Ended
Mar. 31, 2023
Investments, Debt and Equity Securities [Abstract]  
Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale
Amortized cost and estimated fair value of securities available for sale are as follows (in thousands):
 March 31, 2023
 Amortized CostUnrealized GainsUnrealized LossesAllowance for credit lossesEstimated Fair Value
U.S. Treasury notes and bonds$61,619 $— $5,291 $— $56,328 
Mortgage-backed securities, residential508,906 — 76,252 — 432,654 
Obligations of states and political subdivisions39,795 19 400 — 39,414 
Corporate bonds and notes25,750 — 5,120 — 20,630 
SBA loan pools78,769 130 1,870 — 77,029 
Total$714,839 $149 $88,933 $— $626,055 

 December 31, 2022
 Amortized CostUnrealized GainsUnrealized LossesEstimated Fair Value
U.S. Treasury notes and bonds$61,800 $— $6,225 $55,574 
Mortgage-backed securities, residential518,838 — 83,707 435,131 
Obligations of states and political subdivisions39,828 2 938 38,892 
Corporate bonds and notes25,750 — 3,780 21,970 
SBA loan pools82,982 155 2,116 81,022 
Total$729,198 $157 $96,766 $632,589 
Schedule of Amortized Cost and Estimated Fair Value of Securities Held to Maturity
Amortized cost and estimated fair value of securities held to maturity are as follows (in thousands):
 March 31, 2023
 Amortized CostUnrecognized GainsUnrecognized LossesAllowance for credit lossesEstimated Fair Value
Obligations of states and political subdivisions$952 $— $— $— $952 
Time deposits with other financial institutions980 — 27 — 953 
Total$1,932 $— $27 $— $1,905 

 December 31, 2022
 Amortized CostUnrecognized GainsUnrecognized LossesEstimated Fair Value
Obligations of states and political subdivisions$952 $— $— $952 
Time deposits with other financial institutions1,472 — 22 1,450 
Total$2,424 $— $22 $2,402 
Schedule of Amortized Cost and Estimated Fair Value of Debt Securities by Contractual Maturity Securities not due at a single maturity date are shown separately (in thousands):
March 31, 2023
Available for SaleHeld to Maturity
Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
Within one year$3,141 $3,102 $1,004 $1,003 
After one, but within five years104,669 98,309 928 902 
After five, but within ten years18,883 14,501 — — 
After ten years471 460 — — 
127,164 116,372 1,932 1,905 
Mortgage-backed securities, residential508,906 432,654 — — 
SBA loan pools78,769 77,029 — — 
Total$714,839 $626,055 $1,932 $1,905 
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value
The following tables summarize the investment securities available for sale with unrealized losses at March 31, 2023 and December 31, 2022 by aggregated major security type and length of time in a continuous unrealized loss position (in thousands):
 Less than 12 months12 months or longerTotal
March 31, 2023Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
U.S. Treasury notes and bonds$1,107 $16 $55,221 $5,275 $56,328 $5,291 
Mortgage-backed securities, residential7,594 477 425,060 75,775 432,654 76,252 
Obligations of states and political subdivisions20,209 176 12,962 224 33,171 400 
Corporate bonds and notes2,750 250 12,064 4,870 14,814 5,120 
SBA loan pools9,279 20 56,883 1,850 66,162 1,870 
Total temporarily impaired securities$40,939 $939 $562,190 $87,994 $603,129 $88,933 

 Less than 12 months12 months or longerTotal
December 31, 2022Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
U.S. Treasury notes and bonds$1,011 $30 $54,563 $6,195 $55,574 $6,225 
Mortgage-backed securities, residential79,891 7,621 355,240 76,086 435,131 83,707 
Obligations of states and political subdivisions37,847 938 — — 38,785 938 
Corporate bonds and notes4,515 485 7,455 3,295 11,970 3,780 
SBA loan pools14,333 925 51,123 1,191 65,456 2,116 
Total temporarily impaired securities$137,597 $9,999 $468,381 $86,767 $606,916 $96,766