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Securities (Tables)
 6 Months Ended
Jun. 30, 2022
Securities [Abstract]  
Amortized Cost and Fair Value of Available-for-sale Securities

The amortized cost and fair value of debt securities at June 30, 2022 are summarized as follows:

Available-for-Sale

(in thousands)
  
Amortized
Cost
    
Gross
Unrealized
Gains
    
Gross
Unrealized
Losses
    
Fair Value
  
U.S. Treasury and government agencies
  
$
457,576
    
$
210
    
$
(27,509
)
  
$
430,277
  
State and political subdivisions
    
328,954
      
132
      
(49,860
)
    
279,226
  
U.S. government sponsored agency mortgage-backed securities
    
654,315
      
133
      
(52,880
)
    
601,568
  
Asset-backed securities
    
93,467
      
0
      
(2,411
)
    
91,056
  
Total available-for-sale securities
  
$
1,534,312
    
$
475
    
$
(132,660
)
  
$
1,402,127
  


The amortized cost and fair value of debt securities at December 31, 2021 are summarized as follows:

Available-for-Sale

(in thousands)
  
Amortized
Cost
    
Gross
Unrealized
Gains
    
Gross
Unrealized
Losses
    
Fair Value
  
U.S. Treasury and government agencies
  
$
299,606
    
$
351
    
$
(4,187
)
  
$
295,770
  
State and political subdivisions
    
334,218
      
5,524
      
(5,539
)
    
334,203
  
U.S. government sponsored agency mortgage-backed securities
    
733,467
      
5,107
      
(7,765
)
    
730,809
  
Asset-backed securities
    
94,538
      
301
      
(192
)
    
94,647
  
Total available-for-sale securities
  
$
1,461,829
    
$
11,283
    
$
(17,683
)
  
$
1,455,429
  
Amortized Cost and Fair Value of Debt Securities by Contractual Maturity

The amortized cost and fair value of debt securities at June 30, 2022 by contractual maturity are shown below.  Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties.

 
Available-for-Sale
  
(in thousands)
  
Amortized Cost
    
Fair Value
  
Due in one year or less
  
$
44,996
    
$
44,674
  
Due after one through five years
    
236,828
      
224,810
  
Due after five through ten years
    
275,428
      
251,091
  
Due after ten years
    
229,278
      
188,928
  
U.S. government sponsored agency mortgage-backed securities
    
654,315
      
601,568
  
Asset-backed securities
    
93,467
      
91,056
  
Total debt securities
  
$
1,534,312
    
$
1,402,127
  
Available for Sale Securities and Held-to-Maturity Securities, Continuous Unrealized Loss Position

CTBI evaluates its investment portfolio on a quarterly basis for impairment.  The analysis performed as of June 30, 2022 indicates that all impairment is considered temporary, market and interest rate driven, and not credit-related.  The percentage of total debt securities with unrealized losses as of June 30, 2022 was 93.2%, compared to 72.4% as of December 31, 2021.  The following table provides the amortized cost, gross unrealized losses, and fair value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position as of June 30, 2022 that are not deemed to have credit losses.  As stated above, CTBI had no HTM securities as of June 30, 2022.

Available-for-Sale

(in thousands)
  
Amortized
Cost
    
Gross
Unrealized
Losses
    
Fair Value
  
Less Than 12 Months
                  
U.S. Treasury and government agencies
  
$
382,012
    
$
(23,320
)
  
$
358,692
  
State and political subdivisions
    
204,981
      
(28,227
)
    
176,754
  
U.S. government sponsored agency mortgage-backed securities
    
449,017
      
(37,182
)
    
411,835
  
Asset-backed securities
    
48,039
      
(1,401
)
    
46,638
  
Total <12 months temporarily impaired AFS securities
    
1,084,049
      
(90,130
)
    
993,919
  
                         
12 Months or More
                        
U.S. Treasury and government agencies
    
44,913
      
(4,189
)
    
40,724
  
State and political subdivisions
    
99,653
      
(21,633
)
    
78,020
  
U.S. government sponsored agency mortgage-backed securities
    
165,619
      
(15,698
)
    
149,921
  
Asset-backed securities
    
45,428
      
(1,010
)
    
44,418
  
Total ≥12 months temporarily impaired AFS securities
    
355,613
      
(42,530
)
    
313,083
  
                         
Total
                        
U.S. Treasury and government agencies
    
426,925
      
(27,509
)
    
399,416
  
State and political subdivisions
    
304,634
      
(49,860
)
    
254,774
  
U.S. government sponsored agency mortgage-backed securities
    
614,636
      
(52,880
)
    
561,756
  
Asset-backed securities
    
93,467
      
(2,411
)
    
91,056
  
Total temporarily impaired AFS securities
  
$
1,439,662
    
$
(132,660
)
  
$
1,307,002
  


The analysis performed as of December 31, 2021 indicated that all impairment was considered temporary, market and interest rate driven, and not credit-related.  The following table provides the amortized cost, gross unrealized losses, and fair value, aggregated by investment category and length of time the individual securities have been in a continuous unrealized loss position as of December 31, 2021 that are not deemed to be other-than-temporarily impaired.  As stated above, CTBI had no HTM securities as of December 31, 2021.

Available-for-Sale

(in thousands)
  
Amortized
Cost
    
Gross
Unrealized
Losses
    
Fair Value
  
Less Than 12 Months
                  
U.S. Treasury and government agencies
  
$
249,990
    
$
(4,123
)
  
$
245,867
  
State and political subdivisions
    
197,592
      
(4,779
)
    
192,813
  
U.S. government sponsored agency mortgage-backed securities
    
473,831
      
(6,759
)
    
467,072
  
Asset-backed securities
    
52,229
      
(190
)
    
52,039
  
Total <12 months temporarily impaired AFS securities
    
973,642
      
(15,851
)
    
957,791
  
                         
12 Months or More
                        
U.S. Treasury and government agencies
    
14,505
      
(64
)
    
14,441
  
State and political subdivisions
    
19,126
      
(760
)
    
18,366
  
U.S. government sponsored agency mortgage-backed securities
    
62,330
      
(1,006
)
    
61,324
  
Asset-backed securities
    
1,368
      
(2
)
    
1,366
  
Total ≥12 months temporarily impaired AFS securities
    
97,329
      
(1,832
)
    
95,497
  
                         
Total
                        
U.S. Treasury and government agencies
    
264,495
      
(4,187
)
    
260,308
  
State and political subdivisions
    
216,718
      
(5,539
)
    
211,179
  
U.S. government sponsored agency mortgage-backed securities
    
536,161
      
(7,765
)
    
528,396
  
Asset-backed securities
    
53,597
      
(192
)
    
53,405
  
Total temporarily impaired AFS securities
  
$
1,070,971
    
$
(17,683
)
  
$
1,053,288