Organization	3 Months Ended
Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization	Organization Liquidity Services (the “Company”) operates a network of leading ecommerce marketplaces that enable buyers and sellers to transact in an efficient, automated environment offering over 500 product categories. The Company’s marketplaces provide professional buyers access to a global, organized supply of new, surplus, and scrap assets presented with digital images and other relevant product information. Additionally, the Company enables its corporate and government sellers to enhance their financial return on offered assets by providing a liquid marketplace and value-added services that encompass the consultative management, valuation, and sale of surplus assets. The Company's broad range of services include program management, valuation, asset management, reconciliation, Return to Vendor ("RTV") and Returns Management Authorization ("RMA"), refurbishment and recycling, fulfillment, marketing and sales, warehousing and transportation, buyer support, and compliance and risk mitigation, as well as self-service tools. The Company organizes the products on its marketplaces into categories across major industry verticals such as consumer electronics, general merchandise, apparel, scientific equipment, aerospace parts and equipment, technology hardware, energy equipment, industrial capital assets, fleet and transportation equipment and specialty equipment. The Company’s marketplaces are www.liquidation.com, www.govliquidation.com, www.govdeals.com, www.networkintl.com, www.secondipity.com, www.go-dove.com, www.unclesamsretailoutlet.com, www.irondirect.com, and www.auctiondeals.com. The Company has over 10,000 sellers, including Fortune 1000 and Global 500 organizations as well as federal, state, and local government agencies. The Company has three reportable segments, Retail Supply Chain Group (RSCG), Capital Assets Group (CAG), and GovDeals. See Note 13 in the Notes to the Consolidated Financial Statements for Segment Information. The Company's operations are subject to certain risks and uncertainties, many of which are associated with technology-oriented companies, including, but not limited to, the Company's dependence on use of the Internet, the effect of general business and economic trends, the Company's susceptibility to rapid technological change, actual and potential competition by entities with greater financial and other resources than the Company, and the potential for the U.S. Government agencies or the commercial sellers from which the Company derives a significant portion of its inventory to change the way they conduct their disposition of surplus or scrap assets or to otherwise terminate or elect not to renew their contracts with the Company. The Company has evaluated subsequent events through the date that these financial statements were issued and filed with the Securities and Exchange Commission.

Organization

Liquidity Services (the “Company”) operates a network of leading ecommerce marketplaces that enable buyers and sellers to transact in an efficient, automated environment offering over 500 product categories. The Company’s marketplaces provide professional buyers access to a global, organized supply of new, surplus, and scrap assets presented with digital images and other relevant product information. Additionally, the Company enables its corporate and government sellers to enhance their financial return on offered assets by providing a liquid marketplace and value-added services that encompass the consultative management, valuation, and sale of surplus assets. The Company's broad range of services include program management, valuation, asset management, reconciliation, Return to Vendor ("RTV") and Returns Management Authorization ("RMA"), refurbishment and recycling, fulfillment, marketing and sales, warehousing and transportation, buyer support, and compliance and risk mitigation, as well as self-service tools. The Company organizes the products on its marketplaces into categories across major industry verticals such as consumer electronics, general merchandise, apparel, scientific equipment, aerospace parts and equipment, technology hardware, energy equipment, industrial capital assets, fleet and transportation equipment and specialty equipment. The Company’s marketplaces are www.liquidation.com, www.govliquidation.com, www.govdeals.com, www.networkintl.com, www.secondipity.com, www.go-dove.com, www.unclesamsretailoutlet.com, www.irondirect.com, and www.auctiondeals.com. The Company has over 10,000 sellers, including Fortune 1000 and Global 500 organizations as well as federal, state, and local government agencies. The Company has three reportable segments, Retail Supply Chain Group (RSCG), Capital Assets Group (CAG), and GovDeals. See Note 13 in the Notes to the Consolidated Financial Statements for Segment Information.

The Company's operations are subject to certain risks and uncertainties, many of which are associated with technology-oriented companies, including, but not limited to, the Company's dependence on use of the Internet, the effect of general business and economic trends, the Company's susceptibility to rapid technological change, actual and potential competition by entities with greater financial and other resources than the Company, and the potential for the U.S. Government agencies or the commercial sellers from which the Company derives a significant portion of its inventory to change the way they conduct their disposition of surplus or scrap assets or to otherwise terminate or elect not to renew their contracts with the Company.

The Company has evaluated subsequent events through the date that these financial statements were issued and filed with the Securities and Exchange Commission.