XML 48 R71.htm IDEA: XBRL DOCUMENT

Co-Promotion Agreement - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Co Promotion Agreement [Line Items]
Accrued expenses and other current liabilities	$ 139,826	$ 84,171
Co-Promotion Agreement \| Kowa Pharmaceuticals America, Inc.
Co Promotion Agreement [Line Items]
Agreement amended date	Jul. 25, 2017
Promotion fee as a percentage of gross margin		18.50%
Maximum co-promotion tail payments receive period	3 years
Co-promotion tail payments receivable		$ 17,800
Accrued co- promotion tail payments		16,600
Tail payments during the period	$ 7,300
Accrued expenses and other liabilities	10,000	27,600
Accrued expenses and other current liabilities	$ 6,500	$ 18,100