Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical)

v2.4.1.9
CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Stock Options And Warrants Exercised 215,500sfbs_StockIssuedDuringPeriodSharesStockOptionsAndWarrantsExercised  
Stock option and Warrants Exercised Tax Benefits $ 269us-gaap_DeferredTaxExpenseFromStockOptionsExercised $ 240us-gaap_DeferredTaxExpenseFromStockOptionsExercised
Common Dividends Paid Per Share $ 0.06sfbs_CommonDividendsPaidPerShare $ 0.05sfbs_CommonDividendsPaidPerShare
Issue shares of REIT preferred 125sfbs_StockIssuedDuringPeriodSharesPreferredNewIssues 250sfbs_StockIssuedDuringPeriodSharesPreferredNewIssues
Common Stock [Member]    
Stock Issued During Period, Shares, New Issues 636,592us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember