Nature of Operations	6 Months Ended
Jun. 30, 2023
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 to the United States (“U.S.”) and Canadian cannabinoid markets where cannabis production or consumption has been legalized for therapeutic or adult use. TerrAscend operates a number of synergistic businesses, including Gage Growth ("Gage"), a cultivator, processor and retailer in Michigan; KISA Enterprises MI, LLC and KISA Holdings LLC (collectively "Pinnacle"); The Apothecarium (“The Apothecarium”), a cannabis dispensary with several retail locations in California, Pennsylvania and New Jersey; TerrAscend NJ, LLC ("TerrAscend NJ"), a cultivator, processor and retailer with operations in New Jersey; Ilera Healthcare (“Ilera”), Pennsylvania’s medical cannabis cultivator, processor and dispenser; vertically integrated operations in Maryland which include HMS Health, LLC and HMS Processing, LLC (collectively “HMS”), a cannabis cultivator and processor, Allegany Medical Marijuana Dispensary ("AMMD"), Peninsula Alternative Health ("Peninsula"), Blue Ridge Wellness ("Blue Ridge"), and Herbiculture Inc. ("Herbiculture"); Valhalla Confections, a cannabis-infused edibles brand; and State Flower, a California-based cannabis producer operating a licensed cultivation facility in San Francisco. Notwithstanding various states in the U.S. which have implemented medical marijuana laws, or which have otherwise legalized the use of cannabis, the use of cannabis remains illegal under U.S. federal law for any purpose, by way of the Controlled Substances Act of 1970. Effective July 4, 2023, the Company commenced trading of its common shares on the Toronto Stock Exchange ("TSX"), under the ticker symbol "TSND". Previously from May 3, 2017 to June 30, 2023, common shares of the Company were traded on the Canadian Securities Exchange under ticker symbol "TER". The common shares of the Company began trading on OTCQX on October 22, 2018 under the ticker symbol "TRSSF" and changed its ticker symbol to "TSNDF" effective July 6, 2023. The Company’s registered office is located at 77 City Centre Drive, Suite 501, Mississauga, Ontario, L5B 1M5.

Nature of Operations

6 Months Ended

Jun. 30, 2023

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 to the United States (“U.S.”) and Canadian cannabinoid markets where cannabis production or consumption has been legalized for therapeutic or adult use. TerrAscend operates a number of synergistic businesses, including Gage Growth ("Gage"), a cultivator, processor and retailer in Michigan; KISA Enterprises MI, LLC and KISA Holdings LLC (collectively "Pinnacle"); The Apothecarium (“The Apothecarium”), a cannabis dispensary with several retail locations in California, Pennsylvania and New Jersey; TerrAscend NJ, LLC ("TerrAscend NJ"), a cultivator, processor and retailer with operations in New Jersey; Ilera Healthcare (“Ilera”), Pennsylvania’s medical cannabis cultivator, processor and dispenser; vertically integrated operations in Maryland which include HMS Health, LLC and HMS Processing, LLC (collectively “HMS”), a cannabis cultivator and processor, Allegany Medical Marijuana Dispensary ("AMMD"), Peninsula Alternative Health ("Peninsula"), Blue Ridge Wellness ("Blue Ridge"), and Herbiculture Inc. ("Herbiculture"); Valhalla Confections, a cannabis-infused edibles brand; and State Flower, a California-based cannabis producer operating a licensed cultivation facility in San Francisco. Notwithstanding various states in the U.S. which have implemented medical marijuana laws, or which have otherwise legalized the use of cannabis, the use of cannabis remains illegal under U.S. federal law for any purpose, by way of the Controlled Substances Act of 1970.

Effective July 4, 2023, the Company commenced trading of its common shares on the Toronto Stock Exchange ("TSX"), under the ticker symbol "TSND". Previously from May 3, 2017 to June 30, 2023, common shares of the Company were traded on the Canadian Securities Exchange under ticker symbol "TER". The common shares of the Company began trading on OTCQX on October 22, 2018 under the ticker symbol "TRSSF" and changed its ticker symbol to "TSNDF" effective July 6, 2023. The Company’s registered office is located at 77 City Centre Drive, Suite 501, Mississauga, Ontario, L5B 1M5.