Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAmortization
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amortization from nonaccretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesNonaccretableYieldPremiumAmortization
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The difference between the contractually required payments and the cash flows expected to be collected at acquisition, considering the impact of prepayments, is referred to as the nonaccretable (yield) and premium.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesNonaccretableYieldPremiumBalance
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The certain loans acquired in transfer accounted for as debt securities nonaccretable yield premium reduction principal during the reported period.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesNonaccretableYieldPremiumReductionPrincipal
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Charge off from nonaccretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesNonaccretableYieldPremiumWriteoff
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amortization cost charge from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingBalancePrincipalAmortization
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Principal reduction from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingBalancePrincipalReduction
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Settlement Increase and decrease from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingBalancePrincipalSettelment
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Charge off from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingBalancePrincipalWrittenOff
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Transfer from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesOutstandingTransferBalanceBetweenNonaccretableAndAccretableYield
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Principal reduction from accretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesPrincipalReduction
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of increase and decrease of accretable settlement adjustments.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesSettlementAdjustment
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Charge off from accretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesWriteoff
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Carrying amount amortization cost charge from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesAmortizationCarryingAmountNet
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Carrying amount of principal reduction from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesCapitalReductionCarryingAmount
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The recorded balance, net of any applicable reductions (for example, unamortized accretable yield and other-than-temporary impairments), for certain contractual rights to receive money on demand or on fixed or determinable dates. This relates to loans accounted for as held-to-maturity 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.

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesCapitalReductionCarryingAmountNet
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Carrying amount of Increase and decrease due to settlement from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesSettlement
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Carrying amount of Transfer from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesTransferBetweenNonaccretableAndAccretableYield
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Carrying amount charge off from contractual receivable of nonaccretable and accretable yield on loans accounted for Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainLoansAcquiredInTransferAccountedForAsHeldToMaturityDebtSecuritiesWrittenOffCarryingAmountNet
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Transfer from nonaccretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainLoansAcquiredinTransferAccountedFoRasDebtSecuritiesNonaccretableYieldPremiumTransferBetweenNonaccretableAndAccretableYield
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Transfer from accretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainLoansAcquiredinTransferAccountedForAsDebtSecuritiesTransferBetweenNonaccretableAndAccretableYield
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Increase and decrease due to settlement from nonaccretable (yield) Premium on loans, accounted for, Loans and Debts Securities Acquired with Deteriorated Credit Quality

No definition available.

Name:	oshc_CertainloansAcquiredInTransferAccountedForAsDebtSecuritiesNonaccretableYieldPremiumSettlementAdjustment
Namespace Prefix:	oshc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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.

No definition available.

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

The aggregate 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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Name:	us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of contractually required payments receivable at acquisition of acquired loans accounted for as debt securities with evidence of deterioration of credit quality.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6379141&loc=d3e15032-111544

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 15
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=27045933&loc=d3e13503-111538