Variable Interest Entities - Schedule of Variable Interest Entities (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Variable Interest Entity [Line Items]
Current assets	$ 420,751,239		$ 420,751,239		$ 183,944,005
Current liabilities	165,301,783		165,301,783		119,288,435
Chesapeake Alternatives LLC [member]
Variable Interest Entity [Line Items]
Net income	0	$ 1,059,784	0	$ 4,019,050
Chesapeake Alternatives LLC [member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Current assets	0		0		32,307,718
Non-current assets	0		0		3,367,360
Current liabilities	0		0		23,362,255
Non-current liabilities	0		0		768,573
Noncontrolling interests	0		0		0
Equity attributable to Green Thumb Industries Inc.	0		0		11,544,250
Revenues	0	5,684,349	0	14,792,710
Net income attributable to noncontrolling interests	0	26,134	0	206,929
Net income attributable to Green Thumb Industries Inc.	0	1,033,650	0	3,812,121
Illinois Disp LLC [member]
Variable Interest Entity [Line Items]
Net income	2,033,763	1,794,988	5,316,680	4,341,825
Illinois Disp LLC [member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Current assets	902,868		902,868		3,738,868
Non-current assets	3,391,185		3,391,185		3,657,392
Current liabilities	5,404,327		5,404,327		336,970
Non-current liabilities	425,678		425,678		461,926
Noncontrolling interests	(767,976)		(767,976)		3,173,683
Equity attributable to Green Thumb Industries Inc.	(767,976)		(767,976)		3,173,683
Revenues	6,330,859	5,224,583	18,274,669	13,170,514
Net income attributable to noncontrolling interests	1,016,881	897,494	2,658,340	2,170,912
Net income attributable to Green Thumb Industries Inc.	1,016,882	897,494	2,658,340	2,170,913
Other Non material VIEs [member]
Variable Interest Entity [Line Items]
Net income	1,071,224	480,421	2,627,963	980,852
Other Non material VIEs [member] | Variable Interest Entity, Primary Beneficiary [Member]
Variable Interest Entity [Line Items]
Current assets	1,318,258		1,318,258		2,592,803
Non-current assets	1,822,624		1,822,624		2,281,839
Current liabilities	368,221		368,221		1,563,224
Non-current liabilities	720,001		720,001		783,356
Noncontrolling interests	664,434		664,434		363,413
Equity attributable to Green Thumb Industries Inc.	1,388,226		1,388,226		$ 2,260,773
Revenues	3,981,488	2,695,781	11,115,034	6,778,501
Net income attributable to noncontrolling interests	358,742	185,452	1,026,385	319,511
Net income attributable to Green Thumb Industries Inc.	$ 712,482	$ 294,969	$ 1,601,578	$ 661,341