Convertible Note Payable - Related Party, Net (Details)			1 Months Ended		3 Months Ended	6 Months Ended
	Jun. 10, 2016 USD ($) item $ / shares shares	Feb. 11, 2016 USD ($) item $ / shares shares	Jan. 31, 2016 item $ / shares	Oct. 31, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Oct. 27, 2015 USD ($)
Gain (loss) on debt extinguishment					$ 13,000	$ (1,653,000)
Derivative income (loss)					$ (130,000)	(778,000)
Sentient Loan
Principal amount of loan				$ 5,000,000
Amount of accrued interest converted to equity	$ 34,000	$ 100,000
Stock price trigger (as a percent)	90.00%	90.00%
Consecutive trading days, period | item	15	15
Interest rate (as a percent)				9.00%
Amount of debt converted to equity	$ 1,100,000	$ 3,900,000
Equity shares issued upon conversion of debt | shares	4,011,740	23,355,000
Exercise price per share of shares converted from debt | $ / shares	$ 0.289	$ 0.172
Fair value of imbedded derivative									$ 1,100,000
Debt issuance costs				$ 300,000
Gain (loss) on debt extinguishment						1,700,000
Derivative income (loss)						$ (800,000)
Debt outstanding							$ 0	$ 0
Sentient Loan | Period Preceding Loan Closure Date
Stock price trigger (in dollars per share) | $ / shares			$ 0.289
Stock price trigger (as a percent)			90.00%
Consecutive trading days, period | item			15
Sentient Loan | Period Preceding Loan Conversion Date
Stock price trigger (as a percent)			90.00%
Consecutive trading days, period | item			15