Customer Concentration

12 Months Ended

Dec. 31, 2014

Concentration Risk Disclosure [Text Block]

Customer Concentration

The percentage of total revenue earned from licensees net sales, which individually accounted for 10% or more of our total revenues:



	Year Ended December 31,
	2014		2013		2012
Licensees
Genentech	71	%	81	%	84	%
Biogen Idec	10	%	11	%	12	%

Total revenues by geographic area are based on the country of domicile of the counterparty to the agreement:



	Year Ended December 31,
(In thousands)	2014		2013		2012
United States	$	334,325	$	177,251	$	140,179
Europe	246,825		278,934		240,626
Other	75		75		75
Total revenues	$	581,225	$	456,260	$	380,880

- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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