Revenue Arrangements (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Schedule of Changes in Contract Liabilities

The following table presents changes in the Company’s contract liabilities during the nine months ended September 30, 2020 (in thousands):

	Balance at						Balance at
	beginning of period		Additions		Deductions		end of period
Nine Months Ended September 30, 2020
Contract liabilities:
Deferred revenue	$	16,354	$	104,158	$	(4,673)	$	115,839
Total contract liabilities	$	16,354	$	104,158	$	(4,673)	$	115,839