Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2012

Accounts Receivable

Schedule of customers representing greater than 10% of accounts receivable balances

	June 30, 2012		December 31, 2011
AmerisourceBergen Drug Corporation	48	%	44	%
McKesson Corporation	25	%	33	%
Cardinal Health, Inc.	20	%	15	%