Nature of Operations	3 Months Ended
Mar. 31, 2022
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Nature of Operations	1. Nature of operations TerrAscend Corp. (“TerrAscend” or the “Company”) was incorporated under the Ontario Business Corporations Act on March 7, 2017. TerrAscend provides cannabis products, brands, and services in the United States ("US") and Canada cannabinoid markets and participates in the medical and legal adult use market in several US states where cannabis has been legalized for therapeutic or adult use. TerrAscend operates a number of synergistic businesses, including Gage Growth Corp. ("Gage"), a cultivator and processor in Michigan, The Apothecarium (“Apothecarium”), a cannabis dispensary with several retail locations in California, Pennsylvania and New Jersey; Ilera Healthcare (“Ilera”), Pennsylvania’s medical cannabis cultivator, processor and dispenser; HMS Health, LLC and HMS Processing, LLC (collectively “HMS”), a medical cannabis cultivator and processor based in Maryland; Valhalla Confections, a manufacturer of cannabis-infused edibles; State Flower a California-based cannabis producer operating a licensed cultivation facility in San Francisco; and Arise Bioscience Inc., a manufacturer and distributor of hemp-derived products. TerrAscend holds a permit to operate as an alternative treatment center in New Jersey, which allows for the cultivation and processing of cannabis with the ability to operate up to three alternative treatment centers. The Company was listed on the Canadian Stock Exchange effective May 3, 2017, having the ticker symbol TER and effective October 22, 2018, the Company began trading on OTCQX under the ticker symbol TRSSF. The Company’s registered office is located at PO Box 43125, Mississauga, Ontario, L5C 1W2.

Nature of Operations

3 Months Ended

Mar. 31, 2022

Organization Consolidation And Presentation Of Financial Statements [Abstract]

1. Nature of operations

TerrAscend Corp. (“TerrAscend” or the “Company”) was incorporated under the Ontario Business Corporations Act on March 7, 2017. TerrAscend provides cannabis products, brands, and services in the United States ("US") and Canada cannabinoid markets and participates in the medical and legal adult use market in several US states where cannabis has been legalized for therapeutic or adult use. TerrAscend operates a number of synergistic businesses, including Gage Growth Corp. ("Gage"), a cultivator and processor in Michigan, The Apothecarium (“Apothecarium”), a cannabis dispensary with several retail locations in California, Pennsylvania and New Jersey; Ilera Healthcare (“Ilera”), Pennsylvania’s medical cannabis cultivator, processor and dispenser; HMS Health, LLC and HMS Processing, LLC (collectively “HMS”), a medical cannabis cultivator and processor based in Maryland; Valhalla Confections, a manufacturer of cannabis-infused edibles; State Flower a California-based cannabis producer operating a licensed cultivation facility in San Francisco; and Arise Bioscience Inc., a manufacturer and distributor of hemp-derived products. TerrAscend holds a permit to operate as an alternative treatment center in New Jersey, which allows for the cultivation and processing of cannabis with the ability to operate up to three alternative treatment centers.

The Company was listed on the Canadian Stock Exchange effective May 3, 2017, having the ticker symbol TER and effective October 22, 2018, the Company began trading on OTCQX under the ticker symbol TRSSF. The Company’s registered office is located at PO Box 43125, Mississauga, Ontario, L5C 1W2.