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Fair Value Considerations (Details 2) - Level 3 [Member] - USD ($)
6 Months Ended 12 Months Ended
Dec. 31, 2017
Jun. 30, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Balance as of June 30, 2017 $ 276,000
Warrant issuances 4,118,000
Change in fair value included in earnings (818,000) (213,000)
Reclassification of warrant from liability to equity upon amendment   (63,000)
Balance as of December 31, 2017 $ 3,300,000