Customer and Supplier Concentration (Details) - Customer Concentration Risk [Member] - item	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Revenue, Major Customer [Line Items]
Number of major customers that are wholesale distributors	3
Accounts Receivable, Net
Revenue, Major Customer [Line Items]
Number of major customers	4		4
Net Revenues
Revenue, Major Customer [Line Items]
Number of major customers	4	4
Actavis, Inc. | Accounts Receivable, Net
Revenue, Major Customer [Line Items]
Major Customers			1.00%
Actavis, Inc. | Net Revenues
Revenue, Major Customer [Line Items]
Major Customers		22.00%
AmerisourceBergen | Accounts Receivable, Net
Revenue, Major Customer [Line Items]
Major Customers	21.00%		30.00%
AmerisourceBergen | Net Revenues
Revenue, Major Customer [Line Items]
Major Customers	30.00%	19.00%
Cardinal Health | Accounts Receivable, Net
Revenue, Major Customer [Line Items]
Major Customers	28.00%		28.00%
Cardinal Health | Net Revenues
Revenue, Major Customer [Line Items]
Major Customers	24.00%	21.00%
McKesson | Accounts Receivable, Net
Revenue, Major Customer [Line Items]
Major Customers	29.00%		19.00%
McKesson | Net Revenues
Revenue, Major Customer [Line Items]
Major Customers	26.00%	20.00%