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Fair Value Measurements
 3 Months Ended
Mar. 31, 2023
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:
 
 March 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$— $265,705 $— $265,705 
Obligations of states and political subdivisions— 430,693 — 430,693 
Agency mortgage-backed securities— 650,451 — 650,451 
U.S. Treasury bills— 200,103 — 200,103 
Corporate debt securities— 8,157 — 8,157 
Total securities available for sale— 1,555,109 — 1,555,109 
Other investments— 2,770 — 2,770 
Derivatives— 19,975 — 19,975 
Total assets$— $1,577,854 $— $1,577,854 
Liabilities    
Derivatives$— $16,858 $— $16,858 
Total liabilities$— $16,858 $— $16,858 

December 31, 2022
(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$— $237,785 $— $237,785 
Obligations of states and political subdivisions— 417,444 — 417,444 
Residential mortgage-backed securities— 659,404 — 659,404 
U.S. Treasury bills— 208,534 — 208,534 
Corporate debt securities— 12,640 — 12,640 
Total securities available-for-sale— 1,535,807 — 1,535,807 
Other investments— 2,667 — 2,667 
Derivative financial instruments— 22,958 — 22,958 
Total assets$— $1,561,432 $— $1,561,432 
Liabilities    
Derivatives$— $21,581 $— $21,581 
Total liabilities$— $21,581 $— $21,581 
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.
March 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)
Loan servicing asset1,004 — 1,004 — 
December 31, 2022
(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)
Other real estate269 — — 269 
Loan servicing asset 1,027 1,027 — 
Total$1,296 $— $1,027 $269 

Following is a summary of the carrying amounts and fair values of certain financial instruments:
 March 31, 2023December 31, 2022
(in thousands)Carrying AmountEstimated fair valueLevelCarrying AmountEstimated fair valueLevel
Balance sheet assets    
Securities held-to-maturity, net$720,694 $656,553 Level 2$709,915 $628,517 Level 2
Other investments60,173 60,173 Level 261,123 61,123 Level 2
Loans held for sale261 261 Level 21,228 1,228 Level 2
Loans, net9,873,623 $9,587,197 Level 39,600,206 9,328,844 Level 3
State tax credits, held for sale27,308 28,933 Level 327,700 28,880 Level 3
Servicing asset3,343 4,342 Level 23,648 3,905 Level 2
Balance sheet liabilities    
Certificates of deposit$893,673 $877,954 Level 3$530,708 $512,229 Level 3
Subordinated debentures and notes155,569 150,559 Level 2155,433 152,679 Level 2
FHLB advances100,000 100,000 Level 2100,000 100,004 Level 2
Other borrowings213,489 213,489 Level 2324,119 324,119 Level 2

For information regarding the methods and assumptions used to estimate the fair value of each class of financial instruments refer to Note 19 – Fair Value Measurements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2022, as filed with the SEC.