ServisFirst Bancshares, Inc. Annual report pursuant to Section 13 and 15(d)

Exercisable options (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Shares	412,825	442,940	272,627
Weighted Average Exercise Price	$ 14.03	$ 13.19	$ 11.96
Weighted Average Remaining Contractual Term (years)	3 years 7 months 6 days	4 years 4 months 24 days	6 years 10 months 24 days
Aggregate Intrinsic Value	$ 7,831	$ 7,447	$ 3,555
Exerciseprice 10 [Member]
Shares	106,500
Weighted Average Exercise Price	$ 10
Weighted Average Remaining Contractual Term (years)	2 years 4 months 24 days
Aggregate Intrinsic Value	2,450
Exerciseprice 11 [Member]
Shares	119,500
Weighted Average Exercise Price	$ 11
Weighted Average Remaining Contractual Term (years)	3 years 3 months 18 days
Aggregate Intrinsic Value	2,629
Exerciseprice 15 [Member]
Shares	101,830
Weighted Average Exercise Price	$ 15
Weighted Average Remaining Contractual Term (years)	3 years 10 months 24 days
Aggregate Intrinsic Value	1,833
Exerciseprice 20 [Member]
Shares	47,995
Weighted Average Exercise Price	$ 20
Weighted Average Remaining Contractual Term (years)	4 years 9 months 18 days
Aggregate Intrinsic Value	624
Exerciseprice 25 [Member]
Shares	37,000
Weighted Average Exercise Price	$ 25
Weighted Average Remaining Contractual Term (years)	5 years 8 months 12 days
Aggregate Intrinsic Value	$ 296