Significant Accounting Policies - Schedule of subsidiaries (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage		6.00%
GTI23 Inc [Member] | DE | Reportable Legal Entities [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
VCP23, LLC [Member] | DE | Reportable Legal Entities [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
GTI Core, LLC [Member] | DE | Reportable Legal Entities [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
JB17, LLC [Member] | MD | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Management company
GTI-Clinic Illinois Holdings, LLC [Member] | IL | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
IL Disp, LLC [Member] | IL | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	50.00%
Description of Principal Activities	License holder
RISE Holdings, Inc. [Member] | MA | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
GTI Maryland, LLC [Member] | MD | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Ohio Investors 2017, LLC [Member] | OH | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	99.00%
Description of Principal Activities	Holding Company
GTI Ohio, LLC [Member] | OH | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	99.00%
Description of Principal Activities	License holder
GTI Nevada, LLC [Member] | NV | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
GTI Pennsylvania, LLC [Member] | PA | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
GTI Florida, LLC [Member] | FL | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Holding company
KSGNF, LLC [Member] | FL | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
GTI New Jersey, LLC [Member] | NJ | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
KW Ventures Holdings, LLC [Member] | PA | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Chesapeake Alternatives, LLC [Member] | MD | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Meshow, LLC [Member] | MD | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	0.00%
Description of Principal Activities	License holder
Advanced Grow Labs, LLC [member] | CT | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Bluepoint Wellness of Westport, LLC [Member] | CT | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	46.00%
Description of Principal Activities	License holder
Bluepoint Apothecary, LLC [Member] | CT | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Southern CT Wellness and Healing [member] | CT | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License Holder
Integral Associates, LLC [Member] | NV | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Integral Associates CA, LLC [Member] | CA | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
Fiorello Pharmaceuticals, Inc. [Member] | NY | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	License holder
MC Brands, LLC [Member] | CO | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Intellectual property
For Success Holding Company [Member] | CA | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Intellectual property
VCP IP Holdings, LLC [Member] | DE | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Intellectual property
Vision Management Services, LLC [Member] | DE | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Management company
TWD18, LLC [Member] | DE | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Investment company
VCP Real Estate Holdings, LLC [Member] | DE | Consolidation, Eliminations [Member]
Schedule of Subsidiaries [Line Items]
Ownership, in Percentage	100.00%
Description of Principal Activities	Real Estate holding company