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Income Taxes
12 Months Ended
Dec. 31, 2020
Income Taxes [Abstract]  
Income Taxes
11.          Income Taxes


The significant components of income tax expense attributable to operations are as follows:

 
Years Ended December 31,
 
(In thousands)
 
2020
   
2019
   
2018
 
Current
                 
Federal
 
$
36,358
   
$
28,475
   
$
15,762
 
State
   
9,768
     
7,653
     
5,977
 
Total Current
 
$
46,126
   
$
36,128
   
$
21,739
 
                         
Deferred
                       
Federal
 
$
(14,021
)
 
$
(1,379
)
 
$
2,281
 
State
   
(3,406
)
   
(338
)
   
416
 
Total Deferred
 
$
(17,427
)
 
$
(1,717
)
 
$
2,697
 
Total income tax expense
 
$
28,699
   
$
34,411
   
$
24,436
 

During 2018, the Company recorded a $5.5 million benefit primarily related to changes in accounting methods approved by the Internal Revenue Services in the fourth quarter of 2018.

The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities are as follows:

 
December 31,
 
(In thousands)
 
2020
   
2019
 
Deferred tax assets:
           
Allowance for loan losses
 
$
27,282
   
$
18,535
 
Lease liability
   
8,141
     
9,331
 
Deferred compensation
   
11,602
     
8,336
 
Postretirement benefit obligation
   
1,511
     
1,631
 
Fair value adjustments from acquisitions
   
259
     
422
 
Loan fees
   
5,400
     
1,384
 
Accrued liabilities
   
1,307
     
1,176
 
Stock-based compensation expense
   
3,213
     
3,032
 
Other
   
3,558
     
1,498
 
Total deferred tax assets
 
$
62,273
   
$
45,345
 
Deferred tax liabilities:
               
Pension benefits
 
$
14,406
   
$
13,014
 
Lease right-of-use asset
   
6,567
     
9,259
 
Amortization of intangible assets
   
12,725
     
12,202
 
Premises and equipment, primarily due to accelerated depreciation
   
4,774
     
5,137
 
Unrealized gain on securities
   
7,732
     
1,770
 
Other
   
952
     
1,429
 
Total deferred tax liabilities
 
$
47,156
   
$
42,811
 
Net deferred tax asset at year-end
 
$
15,117
   
$
2,534
 
Net deferred tax asset at beginning of year
   
2,534
     
8,795
 
Increase (decrease) in net deferred tax asset
 
$
12,583
   
$
(6,261
)

Realization of deferred tax assets is dependent upon the generation of future taxable income. A valuation allowance is recorded when it is more likely than not that some portion of the deferred tax asset will not be realized. Based on available evidence, gross deferred tax assets will ultimately be realized and a valuation allowance was not deemed necessary at December 31, 2020 and 2019.

The following is a reconciliation of the provision for income taxes to the amount computed by applying the applicable Federal statutory rate to income before taxes:

 
Years Ended December 31
 
(In thousands)
 
2020
   
2019
   
2018
 
Federal income tax at statutory rate
 
$
27,948
   
$
32,641
   
$
28,770
 
Tax exempt income
   
(981
)
   
(1,233
)
   
(1,456
)
Net increase in cash surrender value of life insurance
   
(1,135
)
   
(927
)
   
(973
)
Federal tax credit
   
(1,705
)
   
(1,458
)
   
(1,499
)
State taxes, net of federal tax benefit
   
5,026
     
5,773
     
5,051
 
Accounting method changes - tax rate change impact
   
-
     
-
     
(5,326
)
Stock-based compensation, excess tax benefit
   
(152
)
   
(342
)
   
(456
)
Other, net
   
(302
)
   
(43
)
   
325
 
Income tax expense
 
$
28,699
   
$
34,411
   
$
24,436
 

A reconciliation of the beginning and ending balance of Federal and State gross unrecognized tax benefits (“UTBs”) is as follows:

(In thousands)
 
2020
   
2019
 
Balance at January 1
 
$
779
   
$
641
 
Additions for tax positions of prior years
   
254
     
26
 
Current period tax positions
   
145
     
112
 
Balance at December 31
 
$
1,178
   
$
779
 
Amount that would affect the effective tax rate if recognized, gross of tax
 
$
931
   
$
615
 

The Company recognizes interest and penalties on the income tax expense line in the accompanying consolidated statements of income. The Company monitors changes in tax statutes and regulations to determine if significant changes will occur over the next 12 months. As of December 31, 2020, no significant changes to UTBs are projected; however, tax audit examinations are possible, but it is not reasonably possible to estimate when examinations in subsequent years will be completed. The Company recognized an insignificant amount of interest expense related to UTBs in the consolidated statement of income for the year ended December 31, 2020.

As of December 31, 2020, the Company is no longer subject to U.S. Federal tax examination by tax authorities for years prior to 2016 and New York State for years prior to 2015. The tax years 2015 to 2019 are currently being audited by New York State.