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SECURITIES (Tables)
 9 Months Ended
Sep. 30, 2023
SECURITIES  
Schedule of Amortized Costs, Gross Unrealized Gains and Losses, and Estimated Fair Values
The following table summarizes the amortized cost, gross unrealized gains and losses, and estimated fair values of securities available-for-sale (“AFS”) and securities held-to-maturity at September 30, 2023 and December 31, 2022.
($ in thousands)September 30, 2023
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair
Value
Available-for-sale securities:
U.S. Treasury$135,648 $— $10,954 $124,694 
Obligations of U.S. government agencies and sponsored entities147,347 1 21,984 125,364 
Tax-exempt and taxable obligations of states and municipal subdivisions494,334 168 74,824 419,678 
Mortgage-backed securities - residential307,867 4 46,914 260,957 
Mortgage-backed securities - commercial199,065 48 26,114 172,999 
Corporate obligations41,633 — 4,354 37,279 
Other1,000 — — 1,000 
Total available-for-sale$1,326,894 $221 $185,144 $1,141,971 
Held-to-maturity:
U.S. Treasury$89,687 $— $4,256 $85,431 
Obligations of U.S. government agencies and sponsored entities33,656 — 2,781 30,875 
Tax-exempt and taxable obligations of states and municipal subdivisions246,611 96 28,288 218,419 
Mortgage-backed securities - residential144,991 — 21,971 123,020 
Mortgage-backed securities - commercial133,579 — 17,028 116,551 
Corporate obligations10,000 — 1,704 8,296 
Total held-to-maturity$658,524 $96 $76,028 $582,592 
($ in thousands)December 31, 2022
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair
Value
Available-for-sale securities:
U.S. Treasury$135,752 $— $11,898 $123,854 
Obligations of U.S. government agencies sponsored entities163,054 3 18,688 144,369 
Tax-exempt and taxable obligations of states and municipal subdivisions519,190 598 61,931 457,857 
Mortgage-backed securities - residential341,272 11 42,041 299,242 
Mortgage-backed securities - commercial215,200 60 24,363 190,897 
Corporate obligations43,869 — 2,987 40,882 
Total available-for-sale$1,418,337 $672 $161,908 $1,257,101 
Held-to-maturity:
U.S. Treasury$109,631 $— $5,175 $104,456 
Obligations of U.S. government agencies and sponsored entities33,789 — 2,153 31,636 
Tax-exempt and taxable obligations of states and municipal subdivisions247,467 4,525 13,699 238,293 
Mortgage-backed securities - residential156,119 — 17,479 138,640 
Mortgage-backed securities - commercial134,478 7 13,798 120,687 
Corporate obligations10,000 — 1,615 8,385 
Total held-to-maturity$691,484 $4,532 $53,919 $642,097 
Schedule of Credit Quality Debt Securities Held-to-Maturity The following table summarizes the amortized cost of debt securities held-to-maturity at September 30, 2023 and December 31, 2022, aggregated by credit quality indicators.
($ in thousands)September 30, 2023December 31, 2022
Aaa$435,761 $467,736 
Aa1/Aa2/Aa3137,230 110,854 
A1/A233,326 13,757 
BBB10,000 10,000 
Not rated42,207 89,137 
Total$658,524 $691,484 
Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity
($ in thousands)September 30, 2023
Amortized
Cost		Fair
Value
Available-for-sale:
Due less than one year$64,589 $63,710 
Due after one year through five years258,766 238,230 
Due after five years through ten years329,028 274,301 
Due greater than ten years167,579 131,774 
Mortgage-backed securities - residential307,867 260,957 
Mortgage-backed securities - commercial199,065 172,999 
Total$1,326,894 $1,141,971 
Held-to-maturity:
Due less than one year$38,482 $37,742 
Due after one year through five years72,433 68,066 
Due after five years through ten years53,952 47,856 
Due greater than ten years215,087 189,357 
Mortgage-backed securities - residential144,991 123,020 
Mortgage-backed securities - commercial133,579 116,551 
Total$658,524 $582,592 
Schedule of Securities Classified as Available-for-Sale and Held-to-Maturity with Unrealized Losses
The following table summarizes securities in an unrealized loss position for which an allowance for credit losses has not been recorded at September 30, 2023 and December 31, 2022. The securities are aggregated by major security type and length of time in a continuous unrealized loss position:
($ in thousands)September 30, 2023
Losses < 12 MonthsLosses 12 Months or >Total
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
Available-for-sale:
U.S. Treasury$— $— $124,694 $10,954 $124,694 $10,954 
Obligations of U.S. government agencies and sponsored entities187 — 124,848 21,984 125,035 21,984 
Tax-exempt and taxable obligations of state and municipal subdivisions35,198 3,215 373,596 71,609 408,794 74,824 
Mortgage-backed securities - residential749 10 259,613 46,904 260,362 46,914 
Mortgage-backed securities - commercial306 — 169,023 26,114 169,329 26,114 
Corporate obligations— — 37,279 4,354 37,279 4,354 
Total$36,440 $3,225 $1,089,053 $181,919 $1,125,493 $185,144 
Held-to-maturity:
U.S. Treasury$— $— $85,431 $4,256 $85,431 $4,256 
Obligations of U.S. government agencies and sponsored entities708 36 30,166 2,745 30,874 2,781 
Tax-exempt and taxable obligations of state and municipal subdivisions 119,396 10,885 87,466 17,403 206,862 28,288 
Mortgage-backed securities - residential— — 123,020 21,971 123,020 21,971 
Mortgage-backed securities - commercial870 52 115,680 16,976 116,550 17,028 
Corporate obligations— — 8,296 1,704 8,296 1,704 
Total$120,974 $10,973 $450,059 $65,055 $571,033 $76,028 
($ in thousands)December 31, 2022
Losses < 12 MonthsLosses 12 Months or >Total
Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses		Fair
Value		Gross
Unrealized
Losses
Available-for-sale:
U.S. Treasury$4,563 $419 $119,292 $11,479 $123,855 $11,898 
Obligations of U.S. government agencies and sponsored entities34,254 2,293 109,431 16,395 143,685 18,688 
Tax-exempt and taxable obligations of state and municipal subdivisions275,202 31,152 159,508 30,779 434,710 61,931 
Mortgage-backed securities - residential76,125 4,970 222,274 37,071 298,399 42,041 
Mortgage-backed securities - commercial50,193 3,025 136,062 21,338 186,255 24,363 
Corporate obligations35,142 1,995 5,739 992 40,881 2,987 
Total$475,479 $43,854 $752,306 $118,054 $1,227,785 $161,908 
Held-to-maturity:
U.S. Treasury$104,457 $5,175 $— $— $104,457 $5,175 
Obligations of U.S. government agencies and sponsored entities31,636 2,153 — — 31,636 2,153 
Tax-exempt and taxable obligations of state and municipal subdivisions127,628 13,583 15,303 116 142,931 13,699 
Mortgage-backed securities - residential138,639 17,479 — — 138,639 17,479 
Mortgage-backed securities - commercial119,758 13,798 — — 119,758 13,798 
Corporate obligations8,385 1,615 — — 8,385 1,615 
Total$530,503 $53,803 $15,303 $116 $545,806 $53,919