Quarterly Financial Data (Unaudited) (Narrative) (Detail) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Sep. 30, 2014 |
Jun. 30, 2014 |
Mar. 31, 2014 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
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| Schedule of Quarterly Financial Information [Line Items] | |||||||||||
| Expenses | $ 1,163,868 | $ 911,259 | $ 790,591 | ||||||||
| Deferred income tax benefit from reversal of valuation allowance | $ 5,575 | $ 17,255 | |||||||||
| Deferred income tax benefit from reversal of valuation allowance, per share | $ 0.03 | $ 0.08 | |||||||||
| Preliminary allocations of purchase price | $ 2,955 | ||||||||||
| Non Cash Compensation | |||||||||||
| Schedule of Quarterly Financial Information [Line Items] | |||||||||||
| Expenses | $ 2,833 | $ 242 | $ 2,424 | $ 3,260 | $ 2,852 | $ 3,679 | $ 2,083 | $ 1,927 | |||
| X | ||||||||||
- Definition Deferred Income Tax Expense (Benefit) from Reversal of Valuation Allowance No definition available.
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| X | ||||||||||
- Definition Deferred Income Tax Expense (Benefit) from Reversal of Valuation Allowance, per Share No definition available.
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| X | ||||||||||
- Definition [Line Items] for Schedule of Quarterly Financial Information [Table] No definition available.
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| X | ||||||||||
- Definition The net effect on income before taxes of the amortization and accretion of premiums, discounts and intangible assets in the year of acquisition, when the assets of the acquired institution exceed 10 percent of the consolidated assets at the end of the most recent period. No definition available.
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| X | ||||||||||
- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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| X | ||||||||||
- Details
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