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Fair Value Measurements
9 Months Ended
Sep. 30, 2021
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, 2021
(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$— $114,937 $— $114,937 
Obligations of states and political subdivisions— 515,416 — 515,416 
Agency mortgage-backed securities— 505,766 — 505,766 
U.S. Treasury bills— 71,292 — 71,292 
Corporate debt securities— 12,403 — 12,403 
Total securities available for sale— 1,219,814 — 1,219,814 
Other investments217 2,782 — 2,999 
Derivatives— 17,442 — 17,442 
Total assets$217 $1,240,038 $— $1,240,255 
Liabilities    
Derivatives$— $21,428 $— $21,428 
Total liabilities$— $21,428 $— $21,428 

December 31, 2020
(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$— $15,161 $— $15,161 
Obligations of states and political subdivisions— 344,232 — 344,232 
Residential mortgage-backed securities— 526,572 — 526,572 
Corporate debt securities— 14,998 — 14,998 
U.S. Treasury bills— 11,466 — 11,466 
Total securities available-for-sale— 912,429 — 912,429 
Derivative financial instruments— 28,703 — 28,703 
Total assets$— $941,132 $— $941,132 
Liabilities    
Derivatives$— $34,967 $— $34,967 
Total liabilities$— $34,967 $— $34,967 
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.
September 30, 2021
(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)
Nonaccrual loans (1)$1,373 $— $— $1,373 
Fixed assets940 — — 940 
Total$2,313 $— $— $2,313 
(1) The amount represents only balances measured at fair value during the period and still held as of the reporting date.

The following table presents the losses recorded in relation to assets measured on a nonrecurring basis and still held as of the reporting date.
Three months endedNine months ended
(in thousands)September 30, 2021June 30, 2021September 30, 2021September 30, 2020
Nonaccrual loans$1,126 $— $1,126 $4,756 
Other real estate— — — 1,000 
Fixed assets2,546 — 2,546 — 
Total$3,672 $— $3,672 $5,756 

Following is a summary of the carrying amounts and fair values of certain financial instruments:
 September 30, 2021December 31, 2020
(in thousands)Carrying AmountEstimated fair valueLevelCarrying AmountEstimated fair valueLevel
Balance sheet assets    
Securities held-to-maturity, net$438,472 $444,625 Level 2$487,610 $501,523 Level 2
Other investments59,156 59,156 Level 248,764 48,764 Level 2
Loans held for sale5,068 5,068 Level 213,564 13,564 Level 2
Loans, net8,964,487 8,954,895 Level 37,088,264 7,067,562 Level 3
State tax credits, held for sale37,184 41,306 Level 336,853 39,925 Level 3
Servicing asset7,965 7,965 Level 25,721 5,721 Level 2
Balance sheet liabilities    
Certificates of deposit$627,171 $628,425 Level 3$550,095 $553,946 Level 3
Subordinated debentures and notes204,103 193,752 Level 2203,637 192,889 Level 2
FHLB advances50,000 51,527 Level 250,000 51,871 Level 2
Other borrowings and notes payable243,770 243,770 Level 2301,081 301,081 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, 2020, as filed with the SEC.