XML 57 R47.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Credit Quality and Nonperforming Assets (Carrying Amount and Unpaid Principal Balance of Purchased Credit Impaired Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total | [1] | $ 26,977 | $ 28,235
Impaired Financing Receivable, Carrying Value, Total | [2] | 24,043 | 25,521
Purchased Credit Impaired Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total |  | 1,143 | 1,197
Impaired Financing Receivable, Carrying Value, Total |  | 171 | 188
Purchased Credit Impaired Loans [Member] | Consumer Loan [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total |  | 0 | 1
Impaired Financing Receivable, Carrying Value, Total |  | 0 | 0
Purchased Credit Impaired Loans [Member] | Commercial And Industrial Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total |  | 19 | 38
Impaired Financing Receivable, Carrying Value, Total |  | 0 | 0
Purchased Credit Impaired Loans [Member] | Real Estate Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Impaired Financing Receivable, Unpaid Principal Balance, Total |  | 1,124 | 1,158
Impaired Financing Receivable, Carrying Value, Total |  | $ 171 | $ 188
[1] | Contractual principal balance due from customer.
[2] | Principal balance on Company's books, less any direct charge offs, including interest applied to principal and unaccreted discount or premium.

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableImpairedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 14A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953550-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=66008989&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableUnpaidPrincipalBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=bsrr_PurchasedCreditImpairedLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=bsrr_CommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | bsrr_PortfolioSegmentsAxis=bsrr_RealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |