Summary of Significant Accounting Policies (Restated) (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reduction to gross Company product sales:
Company product sales, net	$ 12,830	$ 15,709	$ 50,978	$ 48,156
Gross-To-Net Sales Adjustments
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross Company product sales	53,460	64,943	174,504	136,329
Reduction to gross Company product sales:
Chargebacks and billbacks	30,954	43,161	105,059	82,565
Sales discounts and other allowances	11,559	7,881	26,174	19,579
Total reduction to gross product sales	42,513	51,042	131,233	102,144
Company product sales, net	$ 10,947	$ 13,901	$ 43,271	$ 34,185