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Note 14 - Income Taxes (Tables)
12 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

(dollars in thousands)

 

2015

   

2014

   

2013

 

Current federal income tax

  $ 46,758     $ 32,384     $ 26,136  

Current state income tax

    11,020       7,114       6,147  

Total current

    57,778       39,498       32,283  
                         

Deferred federal income tax benefit

    (6,642 )     (7,494 )     (3,909 )

Deferred state income tax benefit

    (87 )     (46 )     (56 )

Total deferred

    (6,729 )     (7,540 )     (3,965 )
                         

Total income tax expense

  $ 51,049     $ 31,958     $ 28,318  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

(dollars in thousands)

 

2015

   

2014

   

2013

 

Deferred tax assets

                       

Allowance for credit losses

  $ 21,191     $ 18,544     $ 16,440  

Deferred loan fees and costs

    9,724       10,337       5,039  

Deferred rent

    1,364       -       -  

Stock-based compensation

    2,068       1,714       1,370  

Net operating loss

    2,946       3,198       3,449  

Unrealized loss on securities available for sale

    -       -       2,213  

SERP

    1,776       1,421       -  

Premises and equipment

    3,381       1,590       1,283  

Other

    383       71       4  

Total deferred tax assets

    42,833       36,875       29,798  
                         

Deferred tax liabilities

                       

Unrealized gain on securities available for sale

    (694 )     (1,765 )     -  

Excess servicing

    (157 )     (114 )     (95 )

Deferred rent

    -       (162 )     (264 )

Intangible assets

    (1,671 )     (2,323 )     (490 )

Total deferred tax liabilities

    (2,522 )     (4,364 )     (849 )

Net deferred income tax amount

  $ 40,311     $ 32,511     $ 28,949  
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
   

2015

   

2014

   

2013

 
                         

Statutory federal income tax rate

    35.00

%

    35.00

%

    35.00 %

Increase (decrease) due to

                       

State income taxes, net of federal income tax benefit

    5.26       5.33       5.26  

Tax exempt interest and dividend income

    (1.25 )     (2.28 )     (2.17 )

Stock-based compensation expense

    0.02       0.04       0.06  

Other

    (1.28 )     (1.02 )     (0.56 )

Effective tax rates

    37.75

%

    37.07

%

    37.59 %