ServisFirst Bancshares, Inc. Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Notes Tables
Notes Details

EMPLOYEE AND DIRECTOR BENEFITS (Additional Information) (Detail)

v2.4.0.6

EMPLOYEE AND DIRECTOR BENEFITS (Additional Information) (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Share based compensation	$ 259	$ 259
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 8.03	$ 5.89
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	1,467,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	1 year 8 months 12 days
Restricted Stock [Member]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 1,473,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	3 years 10 months 24 days
Share issued during the period	68,500
Plan 2005 [Member]
Shares available for grant	1,025,000
Plan 2009 [Member]
Shares available for grant	425,000
Non Plan Stock Option [Member]
Shares available for grant	55,000
Non Plan Stock Option [Member] \| Minimum [Member]
Share Price	$ 15
Non Plan Stock Option [Member] \| Maximum [Member]
Share Price	$ 20
Stock Warrants [Member]
Warrants outstanding	79,000
Warrants expire during the period	64,000
Warrants exercise price	25.00
Warrants exercisable number	15,000

- Definition

The number of shares into which fully or partially vested other than stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

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- Definition

The exercise price of each class of warrants or rights outstanding.

+ References

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-Topic 235

-SubTopic 10

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- Definition

As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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