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- Definition

Class Of Warrant Or Right, Fair Value Price Of Warrants Or Rights

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- Definition

Class Of Warrant Or Right, Remaining Contractual Period

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- Definition

Class Of Warrant Or Right, Risk-Free Rate

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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.

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- Definition

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

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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- Definition

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

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- Definition

Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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FAIR VALUE - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
FAIR VALUE - Narrative (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2018	Feb. 19, 2020	Dec. 31, 2019	Sep. 30, 2019	Aug. 13, 2019	Sep. 09, 2014
Other \| Collegium warrants
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Fair value adjustment, recorded loss	$ 3,100,000
Receivables from Collegium \| Collegium Pharmaceutical Inc
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Warrant, expected term		2 years 7 months 9 days
Warrant, risk-free rate		0.27%
Warrant, remaining contractual period		2 years 7 months 9 days
Collegium Pharmaceutical Inc \| Receivables from Collegium
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Warrant, fair value price (in dollars per share)		$ 16.33
2.5% Convertible Notes debt 2021 \| Convertible senior notes
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Interest rate							2.50%
Par value of debt			$ 42,500,000		$ 145,000,000.0		$ 345,000,000.0
2.5% Convertible Notes debt 2021 \| Convertible senior notes \| Level 2
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Interest rate	2.50%
Par value of debt	$ 42,500,000			$ 145,000,000.0
2.5% Convertible Notes debt 2021 \| Convertible senior notes \| Fair Value \| Level 2
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Estimated fair value of debt	$ 42,200,000			108,100,000
5.0% Convertible Notes debt 2024 \| Convertible senior notes
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Interest rate						5.00%
Par value of debt			$ 34,500,000			$ 120,000,000.0
5.0% Convertible Notes debt 2024 \| Convertible senior notes \| Level 2
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Interest rate	5.00%
Par value of debt	$ 34,500,000			120,000,000.0
5.0% Convertible Notes debt 2024 \| Convertible senior notes \| Fair Value \| Level 2
Schedule of Cash and Cash Equivalents and Marketable Securities [Line Items]
Estimated fair value of debt	$ 34,300,000			$ 81,600,000