Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2013

Percentage of Revenue from Significant Customers

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

	Three months ended March 31,
	2013			2012
Orencia® Royalties from Bristol		24	%		24	%
Bioprocessing Customer A		38	%		43	%
Bioprocessing Customer B		12	%		14	%
Bioprocessing Customer C		15	%		—

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 March 31,
	2013			2012
United States		47	%		36	%
Sweden		39	%		43	%
United Kingdom		12	%		14	%
Other		2	%		7	%
		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 are as follows:

	March 31, 2013			December 31, 2012
Orencia® Royalties from Bristol		36	%		31	%
Bioprocessing Customer A		36	%		21	%
Pfizer		—			38	%