Long-term Debt, Principal and Interest Only Payments

No definition available.

Name:	ostk_LongtermDebtPrincipalandInterestOnlyPayments
Namespace Prefix:	ostk_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Senior & Mezzanine Current liabilities

+ References

No definition available.

+ Details

Name:	ostk_SeniorMezzanineCurrentliabilities
Namespace Prefix:	ostk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Senior & Mezzanine Note Total Outstanding

+ References

No definition available.

+ Details

Name:	ostk_SeniorMezzanineNoteTotalOutstanding
Namespace Prefix:	ostk_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

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

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16))
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_LongTermDebtTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Details

Name:	us-gaap_DebtInstrumentAxis=ostk_LoanCoreCapitalFundingCorporationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ostk_MezzanineNoteMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=ostk_SeniorandMezzanineBlendedRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

BORROWINGS (Details) - USD ($) $ in Thousands	Mar. 06, 2020	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term Debt		$ 43,739	$ 0
Loan Core Capital Funding Corporation [Member]
Debt Instrument [Line Items]
Senior & Mezzanine Note Total Outstanding		46,800
Other Liabilities, Current		$ 3,100
Loan Core Capital Funding Corporation [Member] \| Senior Notes
Debt Instrument [Line Items]
Long-term Debt	$ 34,500
Annual interest rate	4.242%
Long-term Debt, Term	10 years
Loan Core Capital Funding Corporation [Member] \| Mezzanine Note [Member]
Debt Instrument [Line Items]
Long-term Debt	$ 13,000
Annual interest rate	5.002%
Long-term Debt, Term	10 years
Long-term Debt, Principal and Interest Only Payments	46 months
Loan Core Capital Funding Corporation [Member] \| Senior and Mezzanine Blended Rate [Member]
Debt Instrument [Line Items]
Annual interest rate	4.45%