Contingent Consideration Payable - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended
	Dec. 31, 2013	Feb. 28, 2013	Mar. 31, 2012	Mar. 31, 2020
Line of Credit Facility [Line Items]
Percentage of royalty payable on net sales				15.00%
Minimum
Line of Credit Facility [Line Items]
Discounted cash flow risk adjusted discount rate				14.00%
Broadfin Debt Financing
Line of Credit Facility [Line Items]
Cash consideration received on royalty agreement	$ 2,200
Percentage of royalty payable on net sales	0.834%
Affiliated Entity | Deerfield FSC LLC
Line of Credit Facility [Line Items]
Cash consideration received on royalty agreement		$ 2,600
Percentage of royalty payable on net sales		1.75%
Eclat Pharmaceuticals
Line of Credit Facility [Line Items]
Percentage of earn-out payments			20.00%