XML 104 R40.htm IDEA: XBRL DOCUMENT
v3.19.3.a.u2

Organization (Details) | 12 Months Ended |
--- | --- | ---
Sep. 30, 2019 reportablesegment categories | Jul. 10, 2018
Business Acquisition [Line Items] |  |
Number of product categories offered (in categories) | categories | 500 |
Reportable segments (in segments) | reportablesegment | 4 |
Machinio |  |
Business Acquisition [Line Items] |  |
Percentage acquired |  | 100.00%

X
- Definition Represents the minimum number of product categories offered by the entity. + References No definition available. + Details
Name: | lqdt_NumberOfProductCategoriesOffered
Namespace Prefix: | lqdt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
Name: | us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=lqdt_MachinioCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |