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SECURITIES (Tables)
 6 Months Ended
Jun. 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 June 30, 2023 and December 31, 2022.
($ in thousands)June 30, 2023
Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Estimated
Fair
Value
Available-for-sale securities:
U.S. Treasury$135,683 $— $11,067 $124,616 
Obligations of U.S. government agencies and sponsored entities152,520 1 19,783 132,738 
Tax-exempt and taxable obligations of states and municipal subdivisions505,231 430 57,760 447,901 
Mortgage-backed securities - residential319,417 3 40,622 278,798 
Mortgage-backed securities - commercial201,601 51 24,471 177,181 
Corporate obligations42,244 — 4,375 37,869 
Total available-for-sale$1,356,696 $485 $158,078 $1,199,103 
Held-to-maturity:
U.S. Treasury$89,687 $— $4,648 $85,039 
Obligations of U.S. government agencies and sponsored entities33,681 — 2,383 31,298 
Tax-exempt and taxable obligations of states and municipal subdivisions247,126 6,330 15,968 237,488 
Mortgage-backed securities - residential148,859 — 16,902 131,957 
Mortgage-backed securities - commercial134,120 — 14,016 120,104 
Corporate obligations10,000 — 2,055 7,945 
Total held-to-maturity$663,473 $6,330 $55,972 $613,831 
($ 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 $642,097 
Schedule of Credit Quality Debt Securities Held-to-Maturity The following table summarizes the amortized cost of debt securities held-to-maturity at June 30, 2023 and December 31, 2022, aggregated by credit quality indicators.
($ in thousands)June 30, 2023December 31, 2022
Aaa$440,152 $467,736 
Aa1/Aa2/Aa3137,533 110,854 
A1/A233,349 13,757 
BBB10,000 10,000 
Not rated42,439 89,137 
Total$663,473 $691,484 
Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity
($ in thousands)June 30, 2023
Amortized
Cost		Fair
Value
Available-for-sale:
Due less than one year$62,185 $61,053 
Due after one year through five years265,117 246,185 
Due after five years through ten years334,035 289,647 
Due greater than ten years174,341 146,239 
Mortgage-backed securities - residential319,417 278,798 
Mortgage-backed securities - commercial201,601 177,181 
Total$1,356,696 $1,199,103 
Held-to-maturity:
Due less than one year$38,491 $37,396 
Due after one year through five years72,423 68,056 
Due after five years through ten years52,315 47,359 
Due greater than ten years217,265 208,959 
Mortgage-backed securities - residential148,859 131,957 
Mortgage-backed securities - commercial134,120 120,104 
Total$663,473 $613,831 
Schedule of Securities Classified as Available-for-Sale and Held-to-Maturity with Unrealized Losses
The following table summarizes securities in an unrealized loss position for which an allowance for credit losses has not been recorded at June 30, 2023 and December 31, 2022. The securities are aggregated by major security type and length of time in a continuous unrealized loss position:
($ in thousands)June 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$— $— $124,616 $11,067 $124,616 $11,067 
Obligations of U.S. government agencies and sponsored entities1,031 38 131,338 19,745 132,369 19,783 
Tax-exempt and taxable obligations of state and municipal subdivisions47,332 2,055 378,121 55,705 425,453 57,760 
Mortgage-backed securities - residential9,805 423 268,497 40,199 278,302 40,622 
Mortgage-backed securities - commercial5,067 333 167,716 24,138 172,783 24,471 
Corporate obligations8,323 1,177 29,547 3,198 37,870 4,375 
Total$71,558 $4,026 $1,099,835 $154,052 $1,171,393 $158,078 
Held-to-maturity:
U.S. Treasury$— $— $85,039 $4,648 $85,039 $4,648 
Obligations of U.S. government agencies and sponsored entities736 — 30,561 2,383 31,297 2,383 
Tax-exempt and taxable obligations of state and municipal subdivisions 44,551 4,276 67,739 11,692 112,290 15,968 
Mortgage-backed securities - residential— — 131,957 16,902 131,957 16,902 
Mortgage-backed securities - commercial25,217 1,829 94,887 12,187 120,104 14,016 
Corporate obligations— — 7,945 2,055 7,945 2,055 
Total$70,504 $6,105 $418,128 $49,867 $488,632 $55,972 
($ 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