Related Party Transactions (Details Textual) - USD ($)			1 Months Ended				12 Months Ended
	Feb. 05, 2016	Dec. 03, 2013	Jan. 31, 2021	Feb. 29, 2016	Dec. 31, 2013	Feb. 28, 2013	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Payments to acquire businesses, gross							$ 22,951,000	$ 37,311,000	$ 30,838,000
Percentage of royalty payable on net sales					0.834%
Royalty Agreement Terms
Related Party Transaction [Line Items]
Debt repayment term date		Dec. 31, 2024				Dec. 31, 2024
Long-term debt repayment percentage		0.834%				1.75%
Eclat Pharmaceuticals
Related Party Transaction [Line Items]
Percentage of earn out payment							20.00%
Affiliated Entity | Deerfield CSF LLC
Related Party Transaction [Line Items]
Percentage of royalty payable on net sales						1.75%
Affiliated Entity | Deerfield CSF LLC | FSC
Related Party Transaction [Line Items]
Payments to acquire businesses, gross	$ 1,050,000			$ 1,050,000
Debt instrument, term (in years)	5 years			5 years
Percentage of royalty payable on net sales	15.00%			15.00%
Scenario, Forecast | Affiliated Entity | Deerfield CSF LLC | FSC
Related Party Transaction [Line Items]
Final payment to acquire business gross			$ 15,000,000
Total payments to acquire business gross			$ 20,250,000
Maximum | Affiliated Entity | Deerfield CSF LLC | FSC
Related Party Transaction [Line Items]
Royalty guarantees, commitments, amount	$ 12,500,000
Royalty guarantees, commitments, term (in years)	10 years			10 years