The Company and Description of Business	12 Months Ended
Dec. 31, 2021
Accounting Policies [Abstract]
The Company and Description of Business	1. The Company and Description of Business The accompanying consolidated financial statements include the accounts of Quest Resource Holding Corporation (“QRHC”) and its subsidiaries, Quest Resource Management Group, LLC (“Quest”), Landfill Diversion Innovations, LLC (“LDI”), Youchange, Inc. (“Youchange”), Quest Vertigent Corporation (“QVC”), Quest Vertigent One, LLC (“QV One”), Quest Sustainability Services, Inc. (“QSS”), RWS Facility Services, LLC ("RWS"), and Sustainable Solutions Group, LLC ("SSG"), (collectively, “we,” “us,” or “our company”). Operations We are a national provider of waste and recycling services to customers from across multiple industry sectors that are typically larger, multi-location businesses. We create customer-specific programs and perform the related services for the collection, processing, recycling, disposal, and tracking of waste streams and recyclables. In addition, we offer products such as antifreeze and windshield washer fluid and other minor ancillary services. We also provide information and data that tracks and reports the detailed transactional and environmental results of our services and provides actionable data to improve business operations. The data we generate also enables our customers to address their environmental and sustainability goals and responsibilities. Our principal office is located in The Colony, Texas within the Dallas metroplex. In March 2020, the World Health Organization categorized Coronavirus Disease 2019 (“COVID-19”) as a pandemic, and the President of the United States declared the COVID-19 outbreak a national emergency. The waste management and recycling services we provide are currently designated an essential critical infrastructure business under the President’s COVID-19 guidance, the continued operation of which is vital for national public health, safety and national economic security. The extent of the impact of the COVID-19 outbreak on our operational and financial performance will depend on certain developments, including the duration and spread of the outbreak, its impact on our customers and subcontractors, and the range of governmental and community reactions to the pandemic, which are uncertain and cannot be fully predicted at this time. We have made significant strategic acquisitions in 2020 and 2021, which are further described in Note 3. • On October 19, 2020, Quest acquired substantially all of the assets used in the business of Green Remedies Waste and Recycling, Inc. (“Green Remedies”), a leading provider of independent environmental services, particularly in multi-family housing, located in Burlington, NC. • On June 30, 2021, Quest acquired substantially all of the assets used in the business of an Atlanta, GA-based independent environmental services company. • On November 5, 2021 but effective November 1, 2021, Quest acquired substantially all of the assets used in the business of a Louisville, KY-based independent environmental services company. • On December 3, 2021 but effective November 30, 2021, Quest acquired substantially all of the assets used in the business of a Greenville, SC-based environmental services company. • On December 7, 2021 but effective November 30, 2021, QSS acquired the membership interests of RWS , a Chadds Ford, PA-based environmental services company. RWS, along with its wholly-owned subsidiary, SSG, is a provider of environmental services, particularly in the commercial and industrial markets.

The accompanying consolidated financial statements include the accounts of Quest Resource Holding Corporation (“QRHC”) and its subsidiaries, Quest Resource Management Group, LLC (“Quest”), Landfill Diversion Innovations, LLC (“LDI”), Youchange, Inc. (“Youchange”), Quest Vertigent Corporation (“QVC”), Quest Vertigent One, LLC (“QV One”), Quest Sustainability Services, Inc. (“QSS”), RWS Facility Services, LLC ("RWS"), and Sustainable Solutions Group, LLC ("SSG"), (collectively, “we,” “us,” or “our company”).

We are a national provider of waste and recycling services to customers from across multiple industry sectors that are typically larger, multi-location businesses. We create customer-specific programs and perform the related services for the collection, processing, recycling, disposal, and tracking of waste streams and recyclables. In addition, we offer products such as antifreeze and windshield washer fluid and other minor ancillary services. We also provide information and data that tracks and reports the detailed transactional and environmental results of our services and provides actionable data to improve business operations. The data we generate also enables our customers to address their environmental and sustainability goals and responsibilities. Our principal office is located in The Colony, Texas within the Dallas metroplex.

In March 2020, the World Health Organization categorized Coronavirus Disease 2019 (“COVID-19”) as a pandemic, and the President of the United States declared the COVID-19 outbreak a national emergency. The waste management and recycling services we provide are currently designated an essential critical infrastructure business under the President’s COVID-19 guidance, the continued operation of which is vital for national public health, safety and national economic security. The extent of the impact of the COVID-19 outbreak on our operational and financial performance will depend on certain developments, including the duration and spread of the outbreak, its impact on our customers and subcontractors, and the range of governmental and community reactions to the pandemic, which are uncertain and cannot be fully predicted at this time.

We have made significant strategic acquisitions in 2020 and 2021, which are further described in Note 3.

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On October 19, 2020, Quest acquired substantially all of the assets used in the business of Green Remedies Waste and Recycling, Inc. (“Green Remedies”), a leading provider of independent environmental services, particularly in multi-family housing, located in Burlington, NC.

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On June 30, 2021, Quest acquired substantially all of the assets used in the business of an Atlanta, GA-based independent environmental services company.

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On November 5, 2021 but effective November 1, 2021, Quest acquired substantially all of the assets used in the business of a Louisville, KY-based independent environmental services company.

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On December 3, 2021 but effective November 30, 2021, Quest acquired substantially all of the assets used in the business of a Greenville, SC-based environmental services company.

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On December 7, 2021 but effective November 30, 2021, QSS acquired the membership interests of RWS , a Chadds Ford, PA-based environmental services company. RWS, along with its wholly-owned subsidiary, SSG, is a provider of environmental services, particularly in the commercial and industrial markets.