Customer Concentration Customer Concentration - Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Receivables from Customers	$ 40,120	$ 0
Depomed [Member]
Concentration Risk [Line Items]
Receivables from Customers	6,000	0
Cardinal [Member]
Concentration Risk [Line Items]
Receivables from Customers	7,663	0
Mckesson [Member]
Concentration Risk [Line Items]
Receivables from Customers	9,135	0
ABC [Member]
Concentration Risk [Line Items]
Receivables from Customers	8,039	0
Other [Member]
Concentration Risk [Line Items]
Receivables from Customers	$ 9,283	$ 0