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Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Schedule Of Income Taxes [Line Items] |  |  |
Gross Deferred Tax Assets | $ 48,729 | $ 43,388 |
Net Deferred Tax Asset | 34,749 | $ 28,686 |
Change in deferred tax assets, net | $ 6,100 |  |
Statutory tax rate | 35.00% | 35.00% | 35.00%
Valuation allowance related to gross deferred tax assets | $ 2,670 | $ 2,249 |
Deferred tax assets operating loss carry forwards, total | 26,700 |  |
Decrease to eliminate unrecognized tax benefit related to bad debts | 0 | $ 1,673 | $ 0
Unrecognized tax benefits, accrued interest | $ 100 |  | 300
Unrecognized tax benefits, interest expense |  |  | $ 200
Minimum |  |  |
Schedule Of Income Taxes [Line Items] |  |  |
Deferred tax assets operating loss carry forwards, expiration date | 2020 |  |
Maximum |  |  |
Schedule Of Income Taxes [Line Items] |  |  |
Deferred tax assets operating loss carry forwards, expiration date | 2035 |  |
PENNSYLVANIA |  |  |
Schedule Of Income Taxes [Line Items] |  |  |
Valuation allowance related to gross deferred tax assets | $ 2,700 |  |
Integrity Bancshares, Inc. |  |  |
Schedule Of Income Taxes [Line Items] |  |  |
Gross Deferred Tax Assets | 12,600 |  |
Net Deferred Tax Asset | $ 4,200 |  |

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