Additional Balance Sheet Detail (Tables)

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Summary of Accrued expenses and other current liabilities

Accrued expenses consisted of the following:

	As of December 31,
	2019		2018
	(in thousands)
Payroll and benefits	$	159,464	$	124,753
Research, development and commercial contract costs	105,663		115,300
Product revenue allowances	641,368		550,002
Royalty payable	98,578		101,108
Tax related accruals	72,293		43,281
Other	39,546		24,455
Total	$	1,116,912	$	958,899

Summary Other Current Liabilities

Other current liabilities consisted of the following:

	As of December 31,
	2019		2018
	(in thousands)
Contract liabilities	$	62,332	$	24,870
Finance lease liabilities	30,293		5,271
Other	37,680		20,265
Total	$	130,305	$	50,406

Summary of Other Long Term Liabilities

Other long-term liabilities consisted of the following:

	As of December 31,
	2019		2018
	(in thousands)
Advance from collaborator	$	88,762	$	82,573
Operating lease liabilities	84,292		—
Other	10,264		26,280
Total	$	183,318	$	108,853