Commitments and Contingencies - Narrative (Details)			1 Months Ended
	Jun. 09, 2017 lawsuit	May 10, 2016 investor	Feb. 16, 2016 lawsuit
Loss Contingencies [Line Items]
Loss contingency, individual investors named as lead plaintiffs | investor		5
Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of lawsuits filed	2
PurePulse Class Action Lawsuit [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of lawsuits filed			2