Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

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 Balance Sheet Accounts Impacted for Topic 606

The following balance sheet accounts were impacted:

(In thousands)	Topic 606 Adjustment
Contract assets	$	9,110
Inventory		(8,209	)
Deferred tax asset		109
Contract liabilities—short-term		(1,104	)
Contract liabilities—long-term		(724	)
Accumulated deficit		818
	$	—

Schedule of Contract Assets and Contract Liabilities

Contract assets consisted of the following:

(In thousands)	Contract Assets
Contract assets at January 1, 2018	$	9,110
Additions		57,617
Transferred to receivables, net		(58,497	)
Contract assets at December 31, 2018		8,230
Additions		37,911
Transferred to receivables, net		(32,755	)
Contract assets at December 31, 2019	$	13,386

Contract liabilities consisted of the following:

(In thousands)	Contract Liabilities
Contract liabilities at January 1, 2018	$	9,442
Additions		6,381
Amounts recognized into revenue		(3,129	)
Contract liabilities at December 31, 2018		12,694
Additions		18,677
Amounts recognized into revenue		(2,537	)
Contract liabilities at December 31, 2019	$	28,834

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, 2019, 2018 and 2017:

	Year Ended December 31,
	2019				2018				2017
Customer	Receivables		Revenue		Receivables		Revenue		Receivables		Revenue
Janssen	29	%	28	%	27	%	29	%	31	%	33	%
Biogen	*		17	%	*		10	%	*		*
Cardinal Health	12	%	*		*		13	%	*		*
AmerisourceBergen	10	%	*		*		*		*		*
Acorda	*		*		15	%	10	%	14	%	13	%

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)	2019		2018		2017
Revenue by region:
U.S.	$	966,929	$	884,600	$	700,090
Ireland		3,195		4,915		9,706
Rest of world		200,823		204,759		193,578
Assets by region:
Current assets:
U.S.	$	551,799	$	546,533	$	402,481
Ireland		407,791		433,837		403,167
Rest of world		2,381		2,882		3,196
Long-term assets:
U.S.:
Other	$	382,029	$	312,243	$	360,641
Ireland:
Intangible assets	$	150,643	$	191,001	$	256,168
Goodwill		92,873		92,873		92,873
Other		217,887		245,638		278,701

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,
	2019	2018	2017
Expected option term	5 - 7 years	5 - 8 years	5 - 8 years
Expected stock volatility	46 % - 50 %	44 % - 49 %	43 % - 47 %
Risk-free interest rate	1.34 % - 2.59 %	2.25 % - 3.10 %	1.69 % - 2.38 %
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%