GOODWILL AND INTANGIBLE ASSETS - Components of net definite-lived intangible assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
INTANGIBLE ASSETS
Gross Carrying Amount	$ 352,489	$ 307,225
Accumulated Amortization	(136,870)	(126,837)
Acquired ANDA intangible assets
INTANGIBLE ASSETS
Gross Carrying Amount	103,234	64,704
Accumulated Amortization	$ (33,162)	(30,169)
Weighted Average Amortization Period	8 years 10 months 24 days
NDAs and product rights
INTANGIBLE ASSETS
Gross Carrying Amount	$ 230,974	230,974
Accumulated Amortization	$ (93,635)	(87,352)
Weighted Average Amortization Period	10 years
Marketing and distribution rights
INTANGIBLE ASSETS
Gross Carrying Amount	$ 17,657	10,923
Accumulated Amortization	$ (9,716)	(8,982)
Weighted Average Amortization Period	5 years 8 months 12 days
Non-compete agreement
INTANGIBLE ASSETS
Gross Carrying Amount	$ 624	624
Accumulated Amortization	$ (357)	$ (334)
Weighted Average Amortization Period	7 years

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.

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-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 amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

Reference 2: 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

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.

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