Accounts Receivable (Details) - USD ($)	5 Months Ended	12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Dec. 31, 2018	Jul. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable	$ 11,696,676		$ 4,489,317	$ 3,750,000
Royalty Revenue from Sales of NARCAN
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable			$ 4,484,433
SWK Purchase Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of milestone payments due	90.00%
Accounts receivable	$ 11,696,676			$ 3,750,000
Revenue recognition, percent recognized	90.00%
Milestone payment		$ 3,750,000
SWK Purchase Agreement | Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cumulative net sales milestone		$ 25,000,000
SWK Purchase Agreement | SWK Funding LLC
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of milestone payments due	10.00%