Acquisitions - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Aug. 23, 2022	Mar. 10, 2022	Sep. 30, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Goodwill			$ 90,326	$ 90,326
Loans payable			$ (70,605)
KISA Enterprises MI, LLC and KISA Holdings, LLC
Business Acquisition [Line Items]
Cash and cash equivalents	$ 3,838
Inventory	790
Prepaid expenses and other current assets	93
Property and equipment	5,321
Intangible assets	18,300
Goodwill	9,929
Accounts payable and accrued liabilities	(938)
Corporate income taxes payable	(443)
Deferred revenue	(249)
Deferred tax liability	(6,388)
Net assets acquired	30,253
Consideration paid in cash	13,183
Promissory note payable	10,000
Common Shares of TerrAscend	7,926
Working capital adjustment	(856)
Total consideration	$ 30,253
Gage Growth Corp
Business Acquisition [Line Items]
Cash and cash equivalents		$ 23,366
Restricted cash		1,350
Accounts receivable		7,307
Inventory		19,364
Prepaid expenses and other current assets		3,154
Property and equipment		65,393
Operating right of use asset		1,968
Deposits		1,147
Intangible assets		215,713
Goodwill		168,385
Investments		3,596
Accounts payable and accrued liabilities		(29,271)
Corporate income taxes payable		(5,000)
Operating lease liability		(1,986)
Finance lease liability		(235)
Deferred revenue		(562)
Loans payable		(60,605)
Deferred tax liability		(64,597)
Financing obligations		(12,577)
Other liabilities		(6,097)
Net assets acquired		329,813
Common Shares of TerrAscend		309,475
Fair value of other equity instruments		13,582
Fair value of warrants classified as liabilities		6,756
Total consideration		$ 329,813