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

Quarterly report pursuant to Section 13 or 15(d)

Amortized Cost And Fair Value Of Available For Sale And Held To Maturity Securities (Detail)

Amortized Cost And Fair Value Of Available For Sale And Held To Maturity Securities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Gain (Loss) on Investments [Line Items]
Amortized Cost	$ 284,797	$ 282,647
Gross Unrealized Gain	11,754	11,256
Gross Unrealized Loss	(43)	(94)
Market Value	296,508	293,809
Amortized Cost	21,011	15,209
Gross Unrealized Gain	1,206	790
Gross Unrealized Loss	(24)
Market Value	22,193	15,999
U.S. Treasury and government sponsored agencies
Gain (Loss) on Investments [Line Items]
Amortized Cost	86,643	98,169
Gross Unrealized Gain	1,272	1,512
Gross Unrealized Loss		(59)
Market Value	87,915	99,622
Mortgage-backed securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	84,665	88,118
Gross Unrealized Gain	4,672	4,462
Gross Unrealized Loss	(7)
Market Value	89,330	92,580
Amortized Cost	15,476	9,676
Gross Unrealized Gain	651	410
Gross Unrealized Loss	(24)
Market Value	16,103	10,086
State and municipal securities
Gain (Loss) on Investments [Line Items]
Amortized Cost	107,733	95,331
Gross Unrealized Gain	5,766	5,230
Gross Unrealized Loss	(36)	(35)
Market Value	113,463	100,526
Amortized Cost	5,535	5,533
Gross Unrealized Gain	555	380
Market Value	6,090	5,913
Corporate debt
Gain (Loss) on Investments [Line Items]
Amortized Cost	5,756	1,029
Gross Unrealized Gain	44	52
Market Value	$ 5,800	$ 1,081

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

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+ Details

- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References + Details

- Definition

This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities.

+ References + Details

- Definition

For an unclassified balance sheet, this item represents investments in debt securities which are categorized as held-to-maturity. The held-to-maturity category is for those securities that the entity has the positive intent and ability to hold until maturity.

+ References

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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section A

-Paragraph 4

-Chapter 3

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-Paragraph 1

-Subparagraph (SX 210.9-03.6)

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+ Details

- Definition

This item represents the aggregate fair value of investments in debt securities as of the balance sheet date and which are categorized as held-to-maturity.

+ References + Details

- Definition

As of the balance sheet date, the excess of fair value over carrying value (amortized cost) of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding gain.

+ References + Details

- Definition

As of the balance sheet date, the excess of carrying value (amortized cost) over fair value of a debt security categorized as held-to-maturity, exclusive of dividend or interest income recognized but not yet received and exclusive of any write-downs for other-than-temporary impairment. Such item represents the gross unrecognized holding loss.

+ References + Details