Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Stock Split

-URI http://asc.fasb.org/extlink&oid=6525746

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 4

-Subparagraph (SAB TOPIC 4.C)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Name:	us-gaap_StockholdersEquityNoteStockSplitConversionRatio1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

Shareholders' Equity - Additional Information (Details)	0 Months Ended	1 Months Ended	12 Months Ended
Shareholders' Equity - Additional Information (Details)	Dec. 13, 2013	Sep. 30, 2014	Dec. 31, 2014
Number of Shares, Cancelled
Number of shares converted to one share common stock	5	0.4975
Common stock, number of voting rights per share			1sbcf_NumberOfVotingRightsPerShare
Series A Preferred Stock [Member]
Number of Shares, Cancelled
Duration after which, preferred stock dividend rate increases			5 years