Segment Information and Concentration of Customers and Suppliers (Details 3)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Total revenues | Customer concentration | Auxilium
Concentration of Customers
Concentration risk percentage	39.00%
Total revenues | Customer concentration | Menarini
Concentration of Customers
Concentration risk percentage	26.00%
Total revenues | Customer concentration | CVS
Concentration of Customers
Concentration risk percentage	9.00%	50.00%
Total revenues | Customer concentration | Walgreens
Concentration of Customers
Concentration risk percentage	6.00%	39.00%
Total revenues | Customer concentration | Express Scripts, Inc.
Concentration of Customers
Concentration risk percentage	3.00%	10.00%
Gross accounts receivable | Credit concentration | Menarini
Concentration of Customers
Concentration risk percentage	41.00%
Gross accounts receivable | Credit concentration | CVS
Concentration of Customers
Concentration risk percentage	1.00%	51.00%
Gross accounts receivable | Credit concentration | McKesson
Concentration of Customers
Concentration risk percentage	13.00%
Gross accounts receivable | Credit concentration | Cardinal Health, Inc.
Concentration of Customers
Concentration risk percentage	12.00%
Gross accounts receivable | Credit concentration | Walgreens
Concentration of Customers
Concentration risk percentage	1.00%	44.00%
Gross accounts receivable | Credit concentration | Express Scripts, Inc.
Concentration of Customers
Concentration risk percentage	1.00%	1.00%
Gross accounts receivable | Credit concentration | Amerisource Bergen
Concentration of Customers
Concentration risk percentage	26.00%