XML 81 R58.htm IDEA: XBRL DOCUMENT
v3.20.1

Credit Quality and Nonperforming Assets - Purchased Credit Impaired Loans - Additional Information (Details) | 3 Months Ended
--- | ---
Mar. 31, 2020 USD ($)
Credit Quality and Nonperforming Assets [Abstract] |
Certain loans acquired in transfer accounted for as debt securities, accretable yield, accretion | $ 0

X
- Definition Credit Quality and Nonperforming Assets [Abstract] + References No definition available. + Details
Name: | bsrr_CreditQualityAndNonperformingAssetsAbstract
Namespace Prefix: | bsrr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Current period recognition due to accretion of the excess of a loan's cash flows expected to be collected over the investor's initial investment in the loan for loans accounted for as debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it is probable, at acquisition, that the investor will be unable to collect all contractually required payments receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=118939070&loc=d3e15032-111544 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 15 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118938799&loc=d3e13503-111538 + Details
Name: | us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration