Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2012

Percentage of Revenue from Significant Customers

Revenue from significant customers as a percentage of the Company’s total revenue was as follows:

	Three months ended September 30,						Nine months ended September 30,
	2012			2011			2012			2011
Orencia® Royalties from Bristol		26	%		32	%		24	%		36	%
Bioprocessing Customer A		49	%		58	%		46	%		48	%
Bioprocessing Customer B		8	%		3	%		11	%		4	%
Bioprocessing Customer C		12	%		—			12	%		—

Total Revenue

Percentage by Geographic Area or Significant Customers

The following table represents the Company’s total revenue by geographic area (based on the location of the customer):

	Three months ended September 30,						Nine months ended September 30,
	2012			2011			2012			2011
United States		41	%		36	%		41	%		44	%
Sweden		49	%		58	%		46	%		48	%
United Kingdom		7	%		2	%		10	%		3	%
Other		3	%		4	%		3	%		5	%
Total		100	%		100	%		100	%		100	%

Accounts Receivable

Percentage by Geographic Area or Significant Customers

Significant accounts receivable balances as a percentage of the Company’s total trade accounts receivable and royalties receivable balances were as follows:

	September 30, 2012			December 31, 2011
Orencia® Royalties from Bristol		34	%		53	%
Bioprocessing Customer A		44	%		31	%
Bioprocessing Customer B		9	%		7	%