Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Preparation and Statement of Compliance	(b) Basis of Presentation The accompanying unaudited interim condensed consolidated financial statements include the accounts of Green Thumb and have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in accordance with the rules and regulations of the U.S. Securities & Exchange Commission ("SEC"). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and, accordingly, certain information, footnotes and disclosures normally included in the annual financial statements, prepared in accordance with GAAP, have been condensed or omitted in accordance with SEC rules and regulations. The financial data presented herein should be read in conjunction with the audited consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020, as amended (the "2020 Form 10-K"). In the opinion of management, the financial data presented includes all adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods presented. Results of interim periods should not be considered indicative of the results for the full year. These unaudited interim condensed consolidated financial statements include estimates and assumptions of management that affect the amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from these estimates. Certain previously reported amounts have been reclassified between line items to conform to the current presentation. The reclassifications did not affect the Company’s previously reported consolidated balance sheets, consolidated statements of operations, statements of cash flows or statements of changes in shareholders’ equity.
Significant Accounting Policies	(c) Significant Accounting Policies There have been no changes to the Company’s significant accounting policies as described in Note 2 of the 2020 Form 10-K.
Earnings (Loss) per Share	(d) Earnings (Loss) per Share Basic earnings (loss) per share is calculated using the treasury stock method, by dividing the net earnings (loss) attributable to shareholders by the weighted average number of common shares outstanding during each of the periods presented. Contingently issuable shares (including shares held in escrow) are not considered outstanding common shares and consequently are not included in the loss per share calculation. Diluted earnings per share is calculated using the treasury stock method by adjusting the weighted average number of common shares outstanding to assume conversion of all dilutive potential common shares. The Company has three categories of potentially dilutive common share equivalents: restricted stock units, stock options and warrants. As of September 30, 2021, the Company had 5,625,661 options, 352,936 restricted stock units and 3,591,975 warrants outstanding. As of September 30, 2020, the Company had 5,782,599 options, 688,507 restricted stock units and 2,520,794 warrants outstanding.
New Accounting Pronouncements	(e) Recently Adopted Accounting Standards (i) In December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updated ("ASU") 2019-12, Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes, which is intended to simplify various aspects related to accounting for income taxes (“ASU 2019-12”). ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted ASU 2019-12 on January 1, 2021. The adoption of the standard did not have a material impact on the Company’s unaudited interim condensed consolidated financial statements. (ii) In January 2020, the FASB issued ASU 2020-01, Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) (“ASU 2020-01”), which is intended to clarify the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The Company adopted ASU 2020-01 on January 1, 2021. The adoption of the standard did not have a material impact on the Company’s unaudited interim condensed consolidated financial statements. (c) Recently Issued Accounting Standards (i) On August 5, 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, to improve financial reporting associated with accounting for convertible instruments and contracts in an entity’s own equity. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. We do not expect the adoption of this guidance will have a material impact on the Company’s unaudited interim condensed consolidated financial statements.
Coronavirus Pandemic	(b) Coronavirus Pandemic In March 2020, the World Health Organization categorized coronavirus disease 2019 (together with its variants, “COVID-19”) as a pandemic. COVID-19 continues to spread throughout the U.S. and other countries across the world, and the duration and severity of its effects are currently unknown. The Company continues to implement and evaluate actions to strengthen its financial position and support the continuity of its business and operations. The Company’s unaudited interim condensed consolidated financial statements presented herein reflect estimates and assumptions made by management that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited interim condensed consolidated financial statements and reported amounts of revenue and expenses during the periods presented. Such estimates and assumptions affect, among other things, the Company’s goodwill; long-lived assets and intangible assets; operating lease right of use assets and operating lease liabilities; valuation of deferred income taxes; the allowance for doubtful accounts; assessment of the Company’s lease and non-lease contract expenses; and measurement of compensation cost for bonus and other compensation plans. While the Company’s revenue, gross profit and operating income were not impacted during the first nine months of 2021, the uncertain nature of the spread of COVID-19 and the uncertainty of the impact of nationwide vaccine programs may impact the Company’s business operations for reasons including the potential quarantine of the Company’s employees or those of its supply chain partners, and the Company’s continued designation as an “essential” business in states where the Company does business that currently or in the future impose restrictions on its business operations.

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2021

Basis of Preparation and Statement of Compliance

(b)

Basis of Presentation

The accompanying unaudited interim condensed consolidated financial statements include the accounts of Green Thumb and have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) for interim financial information and in accordance with the rules and regulations of the U.S. Securities & Exchange Commission ("SEC"). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements and, accordingly, certain information, footnotes and disclosures normally included in the annual financial statements, prepared in accordance with GAAP, have been condensed or omitted in accordance with SEC rules and regulations. The financial data presented herein should be read in conjunction with the audited consolidated financial statements and accompanying notes included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020, as amended (the "2020 Form 10-K"). In the opinion of management, the financial data presented includes all adjustments necessary to present fairly the financial position, results of operations and cash flows for the interim periods presented. Results of interim periods should not be considered indicative of the results for the full year. These unaudited interim condensed consolidated financial statements include estimates and assumptions of management that affect the amounts reported in the unaudited condensed consolidated financial statements. Actual results could differ from these estimates.

Certain previously reported amounts have been reclassified between line items to conform to the current presentation. The reclassifications did not affect the Company’s previously reported consolidated balance sheets, consolidated statements of operations, statements of cash flows or statements of changes in shareholders’ equity.

Significant Accounting Policies

(c)

Significant Accounting Policies

There have been no changes to the Company’s significant accounting policies as described in Note 2 of the 2020 Form 10-K.

Earnings (Loss) per Share

(d)

Earnings (Loss) per Share

Basic earnings (loss) per share is calculated using the treasury stock method, by dividing the net earnings (loss) attributable to shareholders by the weighted average number of common shares outstanding during each of the periods presented. Contingently issuable shares (including shares held in escrow) are not considered outstanding common shares and consequently are not included in the loss per share calculation. Diluted earnings per share is calculated using the treasury stock method by adjusting the weighted average number of common shares outstanding to assume conversion of all dilutive potential common shares. The Company has three categories of potentially dilutive common share equivalents: restricted stock units, stock options and warrants. As of September 30, 2021, the Company had 5,625,661 options, 352,936 restricted stock units and 3,591,975 warrants outstanding. As of September 30, 2020, the Company had 5,782,599 options, 688,507 restricted stock units and 2,520,794 warrants outstanding.

New Accounting Pronouncements

(e)

Recently Adopted Accounting Standards

(i)

In December 2019, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updated ("ASU") 2019-12, Income Taxes (Topic 740) - Simplifying the Accounting for Income Taxes, which is intended to simplify various aspects related to accounting for income taxes (“ASU 2019-12”). ASU 2019-12 removes certain exceptions to the general principles in Topic 740 and also clarifies and amends existing guidance to improve consistent application. The Company adopted ASU 2019-12 on January 1, 2021. The adoption of the standard did not have a material impact on the Company’s unaudited interim condensed consolidated financial statements.

(ii)

In January 2020, the FASB issued ASU 2020-01, Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) (“ASU 2020-01”), which is intended to clarify the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The Company adopted ASU 2020-01 on January 1, 2021. The adoption of the standard did not have a material impact on the Company’s unaudited interim condensed consolidated financial statements.

(c)

Recently Issued Accounting Standards

(i)

On August 5, 2020, the FASB issued ASU No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, to improve financial reporting associated with accounting for convertible instruments and contracts in an entity’s own equity. The amendments in this Update are effective for public business entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. We do not expect the adoption of this guidance will have a material impact on the Company’s unaudited interim condensed consolidated financial statements.

Coronavirus Pandemic

(b)

Coronavirus Pandemic

In March 2020, the World Health Organization categorized coronavirus disease 2019 (together with its variants, “COVID-19”) as a pandemic. COVID-19 continues to spread throughout the U.S. and other countries across the world, and the duration and severity of its effects are currently unknown. The Company continues to implement and evaluate actions to strengthen its financial position and support the continuity of its business and operations.

The Company’s unaudited interim condensed consolidated financial statements presented herein reflect estimates and assumptions made by management that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited interim condensed consolidated financial statements and reported amounts of revenue and expenses during the periods presented. Such estimates and assumptions affect, among other things, the Company’s goodwill; long-lived assets and intangible assets; operating lease right of use assets and operating lease liabilities; valuation of deferred income taxes; the allowance for doubtful accounts; assessment of the Company’s lease and non-lease contract expenses; and measurement of compensation cost for bonus and other compensation plans. While the Company’s revenue, gross profit and operating income were not impacted during the first nine months of 2021, the uncertain nature of the spread of COVID-19 and the uncertainty of the impact of nationwide vaccine programs may impact the Company’s business operations for reasons including the potential quarantine of the Company’s employees or those of its supply chain partners, and the Company’s continued designation as an “essential” business in states where the Company does business that currently or in the future impose restrictions on its business operations.