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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2020
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense
The components of income tax expense for the years ended December 31, 2020, 2019, and 2018 are as follows:
($ in thousands)202020192018
Current - Federal$27,799 19,920 19,188 
  - State3,909 2,499 3,187 
Deferred  - Federal(8,893)1,572 1,658 
  - State(1,161)239 156 
Total
$21,654 24,230 24,189 
Schedule of Deferred Tax Assets and Liabilities
The sources and tax effects of temporary differences that give rise to significant portions of the deferred tax assets (liabilities) at December 31, 2020 and 2019 are presented below:
($ in thousands)20202019
Deferred tax assets:
  
Allowance for loan losses
$12,031 4,916 
Excess book over tax pension plan cost
367 241 
Deferred compensation
257 293 
Federal & state net operating loss and tax credit carryforwards
282 376 
Accruals, book versus tax
3,232 2,833 
Pension liability adjustments
418 710 
Foreclosed real estate
123 87 
Basis differences in assets acquired in FDIC transactions
647 416 
Equity compensation661 370 
Partnership investments
258 254 
Leases120 — 
SBA servicing asset
358 400 
All other
Gross deferred tax assets
18,757 10,899 
Less: Valuation allowance
(14)(40)
Net deferred tax assets
18,743 10,859 
Deferred tax liabilities:
Loan fees
(1,011)(2,428)
Depreciable basis of fixed assets
(4,809)(4,995)
Amortizable basis of intangible assets
(7,965)(7,844)
FHLB stock dividends
(236)(472)
Trust preferred securities
(473)(548)
Purchase accounting adjustments
— (84)
Unrealized gain on securities available for sale
(4,699)(2,239)
Gross deferred tax liabilities
(19,193)(18,610)
Net deferred tax liability - included in other liabilities
$(450)(7,751)
Schedule of Effective Tax Rate Reconciliation
The following is a reconcilement of federal income tax expense at the statutory rate of 21% at December 31, 2020 and December 31, 2019 and December 31, 2018, to the income tax provision reported in the financial statements.
($ in thousands)202020192018
Tax provision at statutory rate$21,657 24,418 23,830 
Increase (decrease) in income taxes resulting from:
Tax-exempt interest income(1,050)(1,186)(1,117)
Low income housing tax credits(772)(756)(698)
Bank-owned life insurance income(532)(538)(532)
Non-deductible interest expense23 43 27 
State income taxes, net of federal benefit2,117 2,178 2,639 
Change in valuation allowance(20)(8)
Impact of tax reform— (73)— 
Other, net231 140 48 
Total$21,654 21654000$24,230 $24,189