Commitments and Contingent Liabilities (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013
Commitments and Contingent Liabilities
Commitments to extend credit and standby letters of credit	$ 923.5

The total amount outstanding of the commitments to extend credit and standby letters of credit as of the reporting date.

No definition available.

Name:	scbt_CommitmentsToExtendCreditAndStandbyLettersOfCredit
Namespace Prefix:	scbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant