Accrued Expenses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017		Jun. 30, 2017
Schedule of Accrued Liabilities [Line Items]
Capital expenditures	$ 2,476	$ 1,947
Payroll	1,483	1,580
Professional fees	1,284	546
Interest expense	763	240
Clinical studies	603	596
Royalties	578	856		$ 400
Medicaid and Medicare	542	0
Inventory and Supplies	460	58
Rebates	332	0
Income Tax	60	58
Wholesaler fees	0	7,044
Other	688	577
Accrued expenses	9,269	$ 13,502	[1]
Accounting Standards Update 2014-09
Schedule of Accrued Liabilities [Line Items]
Wholesale fees	2,800
Accounts receivable and medicaid fees	500
Medicare fees	100
Rebates	$ 300

[1] Derived from the audited December 31, 2017 financial statement