Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Schedule of Estimated Useful Life of Property, Plant and Equipment

Asset group	Term
Buildings and improvements	15 - 40 years
Furniture, fixtures and equipment	3 - 10 years
Leasehold improvements	Shorter of useful life or lease term

Schedule of Contract Assets and Contract Liabilities

Contract assets consisted of the following:

(In thousands)	Contract Assets
Contract assets at January 1, 2019	$	8,230
Additions		37,911
Transferred to receivables, net		(32,755	)
Contract assets at December 31, 2019		13,386
Additions		46,325
Transferred to receivables, net		(40,310	)
Contract assets at December 31, 2020	$	19,401

Contract liabilities consisted of the following:

(In thousands)	Contract Liabilities
Contract liabilities at January 1, 2019	$	12,694
Additions		18,677
Amounts recognized into revenue		(2,537	)
Contract liabilities at December 31, 2019		28,834
Additions		—
Amounts recognized into revenue		(4,925	)
Contract liabilities at December 31, 2020	$	23,909

Schedule of Revenue and Receivables From Customers Exceeding 10% of Total in Each Category

The following represents revenue and receivables from the Company’s customers exceeding 10% of the total in each category as of, and for the years ended, December 31, 2020, 2019 and 2018:

	Year Ended December 31,
	2020				2019				2018
Customer	Receivables		Revenue		Receivables		Revenue		Receivables		Revenue
Janssen	30	%	33	%	29	%	28	%	27	%	29	%
Biogen	*		*		*		17	%	*		10	%
Cardinal Health	16	%	21	%	12	%	*		*		13	%
AmerisourceBergen	11	%	10	%	10	%	*		*		*
McKesson	*		14	%	*		*		*		*
Acorda	*		*		*		*		15	%	10	%

Schedule of Revenues by Geographic Location, as Determined by the Location of the Customer, and the Location of its Long-term Assets

Company revenues by geographic location, as determined by the location of the customer, and the location of its assets, are as follows:

	Year Ended December 31,
(In thousands)	2020		2019		2018
Revenue by region:
U.S.	$	838,995	$	966,929	$	884,600
Ireland		3,233		3,195		4,915
Rest of world		196,528		200,823		204,759
Assets by region:
Current assets:
U.S.	$	662,615	$	551,799	$	546,533
Ireland		448,356		407,791		433,837
Rest of world		—		2,381		2,882
Long-term assets:
U.S.:
Other	$	472,999	$	382,029	$	312,243
Ireland:
Intangible assets	$	111,191	$	150,643	$	191,001
Goodwill		92,873		92,873		92,873
Other		161,696		217,887		245,638

Schedule of Fair Value of Each Stock Option Grant Estimated on The Grant Date Using Weighted-average Assumptions

The fair value of each stock option grant was estimated on the grant date with the following weighted‑average assumptions:

	Year Ended December 31,
	2020	2019	2018
Expected option term	5 - 7 years	5 - 7 years	5 - 8 years
Expected stock volatility	47 % - 54 %	46 % - 50 %	44 % - 49 %
Risk-free interest rate	0.24 % - 1.69 %	1.34 % - 2.59 %	2.25 % - 3.10 %
Expected annual dividend yield	—	—	—

Summary of Estimated Fair Value of Stock Options

The Monte Carlo simulation model used the following assumptions:

Grant Date	Weighted-Average Expected Volatility	Cost of Equity	Risk-Free Interest Rate
February 21, 2019	45.0%	12.0%	2.69%