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Securities
 12 Months Ended
Dec. 31, 2019
Securities [Abstract]  
Securities
3.          Securities

The amortized cost, estimated fair value and unrealized gains (losses) of AFS securities are as follows:

(In thousands)
  
Amortized Cost
    
Unrealized Gains
    
Unrealized Losses
    
Estimated Fair Value
  
As of December 31, 2019
                        
Federal agency
  
$
34,998
    
$
3
    
$
243
    
$
34,758
  
State & municipal
    
2,533
      
-
      
20
      
2,513
  
Mortgage-backed:
                                
Government-sponsored enterprises
    
453,614
      
4,982
      
239
      
458,357
  
U.S. government agency securities
    
44,758
      
667
      
156
      
45,269
  
Collateralized mortgage obligations:
                                
Government-sponsored enterprises
    
328,499
      
1,949
      
467
      
329,981
  
U.S. government agency securities
    
104,152
      
718
      
408
      
104,462
  
Total AFS securities
  
$
968,554
    
$
8,319
    
$
1,533
    
$
975,340
  
As of December 31, 2018
                                
Federal agency
  
$
84,982
    
$
10
    
$
693
    
$
84,299
  
State & municipal
    
30,136
      
16
      
237
      
29,915
  
Mortgage-backed:
                                
Government-sponsored enterprises
    
493,225
      
439
      
10,354
      
483,310
  
U.S. government securities
    
29,190
      
270
      
475
      
28,985
  
Collateralized mortgage obligations:
                                
Government-sponsored enterprises
    
332,409
      
344
      
7,211
      
325,542
  
U.S. government securities
    
47,684
      
137
      
1,376
      
46,445
  
Total AFS securities
  
$
1,017,626
    
$
1,216
    
$
20,346
    
$
998,496
  

The components of net realized gains (losses) on the sale of AFS securities are as follows. These amounts were reclassified out of AOCI and into earnings:


  
Years Ended December 31,
  
(In thousands)
  
2019
    
2018
    
2017
  
Gross realized gains
  
$
73
    
$
-
    
$
2,241
  
Gross realized (losses)
    
(152
)
    
(6,622
)
    
(372
)
Net AFS realized (losses) gains
  
$
(79
)
  
$
(6,622
)
  
$
1,869
  

Included in net realized gains (losses) on AFS securities, the Company recorded gains from calls of approximately $25 thousand for the year ended December 31, 2019, none for the year ended December 31, 2018 and approximately $0.1 million for the year ended December 31, 2017.

The amortized cost, estimated fair value and unrealized gains (losses) of HTM securities are as follows:

(In thousands)
  
Amortized
Cost
    
Unrealized
Gains
    
Unrealized
Losses
    
Estimated
Fair Value
  
As of December 31, 2019
                        
Mortgage-backed:
                        
Government-sponsored enterprises
  
$
149,448
    
$
3,184
    
$
155
    
$
152,477
  
U.S. government agency securities
    
13,667
      
584
      
-
      
14,251
  
Collateralized mortgage obligations:
                                
Government-sponsored enterprises
    
189,402
      
2,165
      
368
      
191,199
  
U.S. government agency securities
    
110,498
      
3,256
      
100
      
113,654
  
State & municipal
    
167,059
      
2,628
      
6
      
169,681
  
Total HTM securities
  
$
630,074
    
$
11,817
    
$
629
    
$
641,262
  
As of December 31, 2018
                                
Federal agency
  
$
19,995
    
$
52
    
$
-
    
$
20,047
  
Mortgage-backed:
                                
Government-sponsored enterprises
    
164,618
      
712
      
2,773
      
162,557
  
U.S. government agency securities
    
15,230
      
403
      
-
      
15,633
  
Collateralized mortgage obligations:
                                
Government-sponsored enterprises
    
257,475
      
1,097
      
3,897
      
254,675
  
U.S. government agency securities
    
83,148
      
767
      
-
      
83,915
  
State & municipal
    
243,133
      
331
      
1,616
      
241,848
  
Total HTM securities
  
$
783,599
    
$
3,362
    
$
8,286
    
$
778,675
  

At December 31, 2019 and 2018, all of the mortgaged-backed HTM securities were comprised of U.S. government agency and Government-sponsored enterprises securities.

There were no sales of HTM securities in the years ended December 31, 2019 and 2018. In the year ended December 31, 2017, the Company recognized a loss of $2 thousand on HTM securities sales transactions.

Included in net realized gains (losses), the Company recorded gains from calls on HTM securities of approximately $12 thousand for the year ended December 31, 2019. There were no recorded gains from calls on HTM securities included in net realized gains (losses) for the years ended December 31, 2018, and 2017.

AFS and HTM securities with amortized costs totaling $1.3 billion at December 31, 2019 and $1.5 billion at December 31, 2018, were pledged to secure public deposits and for other purposes required or permitted by law. Additionally, at December 31, 2019 and 2018, AFS and HTM securities with an amortized cost of $189.8 million and $215.3 million, respectively, were pledged as collateral for securities sold under repurchase agreements.

The following table sets forth information with regard to investment securities with unrealized losses segregated according to the length of time the securities had been in a continuous unrealized loss position:


  
Less Than 12 Months
    
12 Months or Longer
    
Total
  
(In thousands)
  
Fair
Value
    
Unrealized
Losses
    
Number
of
Positions
    
Fair
Value
    
Unrealized
Losses
    
Number
of
Positions
    
Fair
Value
    
Unrealized
Losses
    
Number
of
Positions
  
As of December 31, 2019
                                                  
AFS securities:
                                                      
Federal agency
  
$
14,891
    
$
(109
)
    
2
    
$
9,866
    
$
(134
)
    
1
    
$
24,757
    
$
(243
)
    
3
  
State & municipal
    
2,503
      
(20
)
    
1
      
-
      
-
      
-
      
2,503
      
(20
)
    
1
  
Mortgage-backed
    
67,986
      
(273
)
    
21
      
37,745
      
(122
)
    
16
      
105,731
      
(395
)
    
37
  
Collateralized Mortgage obligations
    
113,121
      
(316
)
    
24
      
49,632
      
(559
)
    
17
      
162,753
      
(875
)
    
41
  
Total securities with unrealized losses
  
$
198,501
    
$
(718
)
    
48
    
$
97,243
    
$
(815
)
    
34
    
$
295,744
    
$
(1,533
)
    
82
  
                                                                         
HTM securities:
                                                                        
Mortgage-backed
  
$
-
    
$
-
      
-
    
$
25,370
    
$
(155
)
    
2
    
$
25,370
    
$
(155
)
    
2
  
Collateralized mortgage obligations
    
18,040
      
(181
)
    
3
      
22,389
      
(287
)
    
5
      
40,429
      
(468
)
    
8
  
State & municipal
    
2,257
      
(6
)
    
4
      
-
      
-
      
-
      
2,257
      
(6
)
    
4
  
Total securities with unrealized losses
  
$
20,297
    
$
(187
)
    
7
    
$
47,759
    
$
(442
)
    
7
    
$
68,056
    
$
(629
)
    
14
  
                                                                         
As of December 31, 2018
                                                                  
AFS securities:
                                                                        
Federal agency
  
$
-
    
$
-
      
-
    
$
64,294
    
$
(693
)
    
6
    
$
64,294
    
$
(693
)
    
6
  
State & municipal
    
1,715
      
(3
)
    
3
      
22,324
      
(234
)
    
35
      
24,039
      
(237
)
    
38
  
Mortgage-backed
    
18,462
      
(65
)
    
12
      
428,440
      
(10,764
)
    
101
      
446,902
      
(10,829
)
    
113
  
Collateralized mortgage obligations
    
12,118
      
(69
)
    
5
      
320,908
      
(8,518
)
    
62
      
333,026
      
(8,587
)
    
67
  
Total securities with unrealized losses
  
$
32,295
    
$
(137
)
    
20
    
$
835,966
    
$
(20,209
)
    
204
    
$
868,261
    
$
(20,346
)
    
224
  
                                                                         
HTM securities:
                                                                        
Mortgage-backed
  
$
-
    
$
-
      
-
    
$
82,579
    
$
(2,773
)
    
6
    
$
82,579
    
$
(2,773
)
    
6
  
Collateralized mortgage obligations
    
4,386
      
(7
)
    
2
      
145,396
      
(3,890
)
    
26
      
149,782
      
(3,897
)
    
28
  
State & municipal
    
18,907
      
(84
)
    
30
      
58,258
      
(1,532
)
    
86
      
77,165
      
(1,616
)
    
116
  
Total securities with unrealized losses
  
$
23,293
    
$
(91
)
    
32
    
$
286,233
    
$
(8,195
)
    
118
    
$
309,526
    
$
(8,286
)
    
150
  

Declines in the fair value of HTM securities below their amortized cost, less any current period credit loss, that are deemed to be other-than-temporary are reflected in earnings as realized losses or in OCI. The classification is dependent upon whether the Company intends to sell the security, or whether it is more likely than not, that the Company will be required to sell the security before recovery. The OTTI shall be recognized in earnings equal to the entire difference between the investment's amortized cost basis and its fair value at the balance sheet date. If the Company does not intend to sell the security and it is not more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis less any current-period credit loss, the OTTI shall be separated into (i) the amount representing the credit loss and (ii) the amount related to all other factors. The amount of the total OTTI related to the credit loss shall be recognized in earnings. The amount of the total OTTI related to other factors shall be recognized in OCI, net of applicable taxes.

In estimating OTTI losses, management considers, among other things, (i) the length of time and the extent to which the fair value has been less than cost, (ii) the financial condition and near-term prospects of the issuer and (iii) the historical and implied volatility of the fair value of the security.

Management has the intent to hold the securities classified as HTM until they mature, at which time it is believed the Company will receive full value for the securities. The unrealized losses on HTM debt securities are due to increases in market interest rates over yields at the time the underlying securities were purchased. When necessary, the Company has performed a discounted cash flow analysis to determine whether or not it will receive the contractual principal and interest on certain securities. The fair value is expected to recover as the bond approaches its maturity date or repricing date or if market yields for such investments declines.

Management also has the intent to hold and will not be required to sell, the debt securities classified as AFS for a period of time sufficient for a recovery of cost, which may be until maturity. The unrealized losses on AFS debt securities are due to increases in market interest rates over the yields available at the time the underlying securities were purchased. When necessary, the Company has performed a discounted cash flow analysis to determine whether or not it will receive the contractual principal and interest on certain securities. For AFS debt securities, OTTI losses are recognized in earnings if the Company intends to sell the security. In other cases the Company considers the relevant factors noted above, as well as the Company's intent and ability to retain its investment for a period of time sufficient to allow for any anticipated recovery in market value and whether evidence exists to support a realizable value equal to or greater than the cost basis. Any impairment loss on an equity security is equal to the full difference between the cost basis and the fair value of the security.

As of December 31, 2019 and 2018, management believes the impairments detailed in the table above are temporary. For the years ended December 31, 2019 and 2018, there were no OTTI losses realized in the Company’s consolidated statements of income. For the year ended December 31, 2017, $1.3 million of an OTTI loss on an AFS equity investment was realized in the Company’s consolidated statements of income.

There were no sales of HTM securities in the years ended December 31, 2019 and 2018. During the year ended December 31, 2017, the Company sold HTM securities with an amortized cost of $0.8 million and an unrealized loss of $2 thousand. Due to significant deterioration in the creditworthiness of the issuers of the HTM securities, the circumstances caused the Company to change its intent to hold the HTM securities to maturity, which did not affect the Company's intent to hold the remainder of the HTM portfolio to maturity.

The following tables set forth information with regard to gains and losses on equity securities:


  
Years ended
December 31,
  
(In thousands)
  
2019
    
2018
  
Net gains and losses recognized on equity securities
  
$
4,280
    
$
281
  
Less: Net gains and losses recognized during the period on equity securities sold during the period
    
3,966
      
555
  
Unrealized gains and losses recognized on equity securities still held
  
$
314
    
$
(274
)

Included in the net realized gains and losses recognized on equity securities during the year ended December 31, 2019 the Company recorded a $4.0 million gain from the sale of Visa Class B common stock, which had no readily determinable fair value at the time of the sale. As of December 31, 2019 and 2018, the carrying value of equity securities without readily determinable fair values was $4.0 million. The Company performed a qualitative assessment to determine whether the investments were impaired and identified no areas of concern as of December 31, 2019 and 2018. There were no impairments, downward or upward adjustments recognized for equity securities without readily determinable fair values during the year ended December 31, 2019 and 2018.

The following tables set forth information with regard to contractual maturities of debt securities at December 31, 2019:

(In thousands)
  
Amortized
Cost
    
Estimated Fair
Value
  
AFS debt securities:
            
Within one year
  
$
268
    
$
272
  
From one to five years
    
28,692
      
28,668
  
From five to ten years
    
170,771
      
171,943
  
After ten years
    
768,823
      
774,457
  
Total AFS debt securities
  
$
968,554
    
$
975,340
  
HTM debt securities:
                
Within one year
  
$
27,010
    
$
27,010
  
From one to five years
    
53,895
      
54,358
  
From five to ten years
    
171,942
      
175,630
  
After ten years
    
377,227
      
384,264
  
Total HTM debt securities
  
$
630,074
    
$
641,262
  

Maturities of mortgage-backed, collateralized mortgage obligations and asset-backed securities are stated based on their estimated average lives. Actual maturities may differ from estimated average lives or contractual maturities because, in certain cases, borrowers have the right to call or prepay obligations with or without call or prepayment penalties.

Except for U.S. Government and Government-sponsored enterprises securities, there were no holdings, when taken in the aggregate, of any single issuer that exceeded 10% of consolidated stockholders’ equity at December 31, 2019 and 2018.