v3.21.2

ACQUISITION OF OSMOLEX ER - Narrative (Details) - USD ($) $ in Thousands			3 Months Ended		9 Months Ended
	Jan. 04, 2021	Dec. 01, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Compensation expense			$ 1,874	$ 1,627		$ 5,519	$ 4,803
Amortization of intangible assets			28			83	$ 0
OSMOLEX ER
Business Acquisition [Line Items]
Asset purchase agreement, noncompete agreement, period		5 years
Payments to acquire businesses, gross	$ 7,300
Base purchase price	7,500
Liabilities incurred	200
Prosecution and litigation cost	5,200
Compensation expense	800
Acquisition-related expenses	$ 1,300
Net product sales since acquisition			$ 600		$ 1,400
OSMOLEX ER \| Patents
Business Acquisition [Line Items]
Amortization of intangible assets						$ 200

Asset Purchase Agreement, Noncompete Agreement, Period

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Adamas Pharmaceuticals Inc 10-Q