Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Net Income (Loss) Attributable to Parent	$ (171,954)	$ (23,377)
Net loss per share attributable to Acreage Holdings, Inc. - basic and diluted:	$ (1.85)	$ (0.29)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	46,962,000	37,588,000
Profits interests vested to NCI units	1,000,000	625,000
Weighted average shares outstanding - basic and diluted	92,902,000	79,440,000
Dilutive Securities, Effect on Basic Earnings Per Share, Dilutive Convertible Securities	$ 0	$ 0
Noncontrolling Interest [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	24,612,000	27,397
LLC Profits Interests [Member]
Profits interests vested to NCI units		1,200
Warrant [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	8,125,000	2,259
Equity Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5,067,000	4,902
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	9,158,000
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		1,830

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