Settlement Agreement (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Loss Contingencies [Line Items]
Settlement expense	$ 430,000	$ 1,030,000	$ 430,000	$ 1,030,000
Confidential Settlement Agreement
Loss Contingencies [Line Items]
Litigation settlement amount				$ 1,000,000
Settlement Agreement with All Parties
Loss Contingencies [Line Items]
Settlement expense			$ 400,000