Intangible assets - Patents (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Intangible assets
Intangible assets, gross	$ 25,478,000	$ 25,814,000
Generic Tussionex
Intangible assets
Patents being amortized	$ 352,000
Intangible assets - Useful life	10 years
Adzenys XR-ODT
Intangible assets
Patents being amortized	$ 599,000
Cotempla XR-ODT
Intangible assets
Patents being amortized	$ 83,000
Intangible assets - Useful life	15 years
Adzenys ER
Intangible assets
Patents being amortized	$ 451,000
Intangible assets - Useful life	15 years
Patents
Intangible assets
Intangible assets, gross	$ 1,971,000	$ 2,307,000
Patents being amortized on January 27, 2016 \| Adzenys XR-ODT
Intangible assets
Patents being amortized	$ 535,000
Intangible assets - Useful life	16 years
Patents being amortized on December 2017 \| Adzenys XR-ODT
Intangible assets
Patents being amortized	$ 64,000
Intangible assets - Useful life	15 years
Capitalized Patent Filing Costs
Intangible assets
Intangible assets, gross	$ 486,000

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

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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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- Definition

Gross carrying amount before accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

No definition available.

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