Name:	sbt_FederalHomeLoanBankAdvancesDurationOfAgreement
Namespace Prefix:	sbt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The interest rate for Federal Home Loan Bank line of credit outstanding as of the Balance Sheet date.

No definition available.

Name:	sbt_FederalHomeLoanBankLineOfCreditAdvancesActivityForYearInterestRateAtPeriodEnd
Namespace Prefix:	sbt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Amount of average borrowings outstanding during the period for advances on the Federal Home Loan Bank overdraft line of credit.

No definition available.

Name:	sbt_FederalHomeLoanBankOverdraftLineOfCreditAverageBorrowingsOutstanding
Namespace Prefix:	sbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of maximum advances available under the overdraft line of credit.

No definition available.

Name:	sbt_FederalHomeLoanBankOverdraftLineOfCreditMaximumAmountAvailable
Namespace Prefix:	sbt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

Name:	us-gaap_AdvancesFromFederalHomeLoanBanksAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=75038535&loc=d3e64711-112823

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822