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Fair Value Measurements (Details Narrative) - USD ($)
6 Months Ended 12 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Fair Value Disclosures [Abstract]    
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Transfers into Level 3