REVENUE RECOGNITION (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021 USD ($)	Sep. 30, 2021 USD ($)
REVENUE RECOGNITION.
Gross product revenue	$ 2,528	$ 5,167
Chargebacks and administrative fees	(292)	(487)
Trade discounts and allowances	(128)	(222)
Government rebates and co-payment assistance	(103)	(179)
Sales returns and allowances	(13)	(25)
Total gross-to-net adjustments	(536)	(913)
Net product revenue	1,992	4,254
Estimated amount of gross net accruals	$ 400	$ 400

Amount of expense for administrative services provided to the limited liability company (LLC) or limited partnership (LP) by the managing member or general partner, affiliate of managing member or general partner, or affiliate of LLC or LP, for example, but not limited to, salaries, rent, or overhead costs.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Name:	us-gaap_AdministrativeFeesExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration