BASIS OF PRESENTATION - Additional Information (Details) - Accounting Standards Update 2016-09 [Member] - USD ($)	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2016
New Accounting Pronouncement or Change in Accounting Principle, Effect of Income Tax Expense Benefit	$ 418,000	$ 418,000
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Diluted And Basic Earnings Per Share	$ 0.01	$ 0.01

Amount of the effect of a change in accounting principle on diluted and basic earnings per share.

No definition available.

Name:	sbcf_NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnDilutedAndBasicEarningsPerShare
Namespace Prefix:	sbcf_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration