XML 17 R25.htm IDEA: XBRL DOCUMENT v2.4.0.6

Business of Sierra Bancorp - Additional Information (Detail)	Jun. 30, 2012 Location
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of full service branch offices	25
Number of non-branch locations	6

X

- Definition

Branch Offices

+ References

No definition available.

+ Details

Name:	bsrr_BranchOffices
Namespace Prefix:	bsrr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of Operating Locations

+ References

No definition available.

+ Details

Name:	bsrr_NumberOfOperatingLocations
Namespace Prefix:	bsrr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	bsrr_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems
Namespace Prefix:	bsrr_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration