Long-Term Related Party Payable (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended					12 Months Ended
	Feb. 05, 2016	Mar. 13, 2012	Jan. 31, 2021	Feb. 29, 2016	Dec. 31, 2013	Feb. 28, 2013	Mar. 31, 2012	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Line of Credit Facility [Line Items]
Number of securities called by each warrant (in shares)								1
Percentage of royalty payable on net sales					0.834%
Cash consideration received on royalty agreement					$ 2,200
Payments to acquire businesses, gross								$ 30,838	$ 27,897	$ 11,936
Maximum
Line of Credit Facility [Line Items]
Discounted cash flow risk adjusted discount rate								22.00%
Minimum
Line of Credit Facility [Line Items]
Discounted cash flow risk adjusted discount rate								15.00%
Affiliated Entity | Deerfield CSF LLC
Line of Credit Facility [Line Items]
Percentage of royalty payable on net sales						1.75%
Cash consideration received on royalty agreement						$ 2,600
Eclat Pharmaceuticals
Line of Credit Facility [Line Items]
Warrants issued		2						2	2
Warrant term		6 years
Number of securities called by warrants (in shares)		3,300,000						3,300,000	3,300,000
Number of securities called by each warrant (in shares)		1,100,000
Exercise price of warrants (in usd per share)		$ 11.00
Percentage of earn-out payments							20.00%
Eclat Pharmaceuticals | Exercise Price 1
Line of Credit Facility [Line Items]
Number of securities called by each warrant (in shares)		2,200,000
Exercise price of warrants (in usd per share)		$ 7.44
FSC | Affiliated Entity | Deerfield CSF LLC
Line of Credit Facility [Line Items]
Percentage of royalty payable on net sales	15.00%			15.00%
Royalty amount				$ 12,500
Payments to acquire businesses, gross	$ 1,050			$ 1,050
Debt instrument, term	5 years			5 years
FSC | Affiliated Entity | Deerfield CSF LLC | Scenario, Forecast
Line of Credit Facility [Line Items]
Final payments to acquire business gross			$ 15,000
FSC | Affiliated Entity | Deerfield CSF LLC | Maximum
Line of Credit Facility [Line Items]
Royalty guarantees, commitments, term	10 years			10 years