Charitable Contribution, Date Of Last Required Payment.

No definition available.

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- Definition

Charitable Contribution Quarterly Payment.

+ References

No definition available.

+ Details

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Namespace Prefix:	gtbif_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

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-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Balance Type:	na
Period Type:	instant

- Definition

Date the debt instrument was issued, in CCYY-MM-DD format.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Details

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- Details

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Notes Payable - Schedule of Debt (Parenthetical) (Detail) - USD ($)				12 Months Ended
	Aug. 20, 2020	Jun. 05, 2020	May 22, 2019	Dec. 31, 2017	Sep. 30, 2020
Debt Instrument [Line Items]
Charitable Contribution Quarterly Payment				$ 50,000
Charitable Contribution, Date Of Last Payment				October 2024
Debt Instrument Interest Rate	7.25%	5.00%		2.17%
Debt Maturity Date	Aug. 20, 2025	Jun. 05, 2035
Private Placement Debt [member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate					12.00%
Debt Issuance Date			May 22, 2019
Debt face value			$ 105,466,429
Debt Maturity Date			May 22, 2023
Debt Instrument Carrying Amount					$ 11,618,400
Rise Joliet mortgage [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate					5.00%
Debt Issuance Date		Jun. 05, 2020
Debt face value		$ 1,814,000
Debt Maturity Date		Jun. 05, 2035
Debt Instrument Carrying Amount					$ 177,244
Rise Lakewood mortgage [Member]
Debt Instrument [Line Items]
Debt Instrument Interest Rate	7.25%
Debt face value	$ 833,000
Debt Maturity Date	Aug. 20, 2025