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Fair Value Measurements
 9 Months Ended
Sep. 30, 2024
Fair Value Disclosures [Abstract]  
Fair Value Measurements FAIR VALUE MEASUREMENTS
The following table summarizes financial instruments measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:
 
September 30, 2024
($ in thousands)Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Total Fair
Value
Assets
Securities available for sale
Obligations of U.S. Government-sponsored enterprises$— $299,674 $— $299,674 
Obligations of states and political subdivisions— 424,177 — 424,177 
Agency mortgage-backed securities— 882,669 — 882,669 
Corporate debt securities— 20,578 — 20,578 
U.S. Treasury bills— 159,695 — 159,695 
Total securities available for sale— 1,786,793 — 1,786,793 
Other investments— 3,049 — 3,049 
Derivatives— 16,577 — 16,577 
Total assets$— $1,806,419 $— $1,806,419 
Liabilities
Derivatives$— $11,640 $— $11,640 
Total liabilities$— $11,640 $— $11,640 

December 31, 2023
($ in thousands)Quoted Prices in
Active Markets
for Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)		Total Fair
Value
Assets
Securities available for sale
Obligations of U.S. Government-sponsored enterprises$— $296,446 $— $296,446 
Obligations of states and political subdivisions— 432,171 — 432,171 
Agency mortgage-backed securities— 700,381 — 700,381 
Corporate debt securities— 181,701 — 181,701 
U.S. Treasury bills— 7,574 — 7,574 
Total securities available-for-sale— 1,618,273 — 1,618,273 
Other investments— 2,941 — 2,941 
Derivative financial instruments— 17,789 — 17,789 
Total assets$— $1,639,003 $— $1,639,003 
Liabilities
Derivatives$— $16,184 $— $16,184 
Total liabilities$— $16,184 $— $16,184 
From time to time, the Company measures certain assets at fair value on a nonrecurring basis. These include assets measured at the lower of cost or fair value that were recognized at fair value below cost at the end of the period. The amounts reported in the following tables include balances measured at fair value during the reporting period and still held as of the reporting date.
September 30, 2024
($ in thousands)Total Fair ValueQuoted Prices in Active
Markets for
Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
Individually-evaluated loans$10,816 $— $— $10,816 
Other real estate 4,516 — — 4,516 
Total$15,332 $— $— $15,332 
December 31, 2023
($ in thousands)Total Fair ValueQuoted Prices in Active
Markets for
Identical
Assets
(Level 1)		Significant
Other
Observable
Inputs
(Level 2)		Significant
Unobservable
Inputs
(Level 3)
Individually-evaluated loans$5,138 $— $— $5,138 
Other real estate5,736 — — 5,736 
Total$10,874 $— $— $10,874 


Following is a summary of the carrying amounts and fair values of certain financial instruments:
 September 30, 2024December 31, 2023
($ in thousands)Carrying AmountEstimated fair valueLevelCarrying AmountEstimated fair valueLevel
Balance sheet assets    
Securities held-to-maturity, net$851,647 $805,549 Level 2$750,434 $696,647 Level 2
Other investments72,705 72,705 Level 263,255 63,255 Level 2
Loans held-for-sale304 304 Level 2359 359 Level 2
Loans, net10,940,114 10,616,466 Level 310,749,347 10,392,551 Level 3
State tax credits, held-for-sale21,204 23,057 Level 322,115 23,897 Level 3
Servicing asset2,466 3,710 Level 22,861 3,799 Level 2
Balance sheet liabilities    
Certificates of deposit$1,360,553 $1,355,848 Level 3$1,272,914 $1,265,905 Level 3
Subordinated debentures and notes156,407 154,969 Level 2155,984 154,354 Level 2
FHLB advances150,000 150,000 Level 2— — Level 2
Other borrowings170,815 148,461 Level 2297,829 274,658 Level 2

For information regarding the methods and assumptions used to estimate the fair value of each class of financial instruments refer to Note 18 – Fair Value Measurements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023, as filed with the SEC.