Subsequent Events (Details) - Series B Preferred Stock - 2017 Underwritten Public Offering - Maxim Group, LLC - Subsequent Event - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
	Aug. 14, 2017	Aug. 04, 2017
Preferred Stock
Subsequent Event [Line Items]
Common stock issued (in shares)	5,000
Preferred share yield	8.00%
Gross proceeds from issuance of preferred stock and warrants	$ 5,000
Preferred stock converted (in shares)		4,351
Shares issued in conversion (in shares)		11,904,984
Conversion Condition One | Preferred Stock
Subsequent Event [Line Items]
Exercise price of warrants (in USD per share)	$ 1.22
Conversion Condition Two | Preferred Stock
Subsequent Event [Line Items]
Exercise price of warrants (in USD per share)	$ 0.35
Warrant conversion price	87.50%
Warrants Issued As Part Of 2017 Underwritten Public Offering | Warrant
Subsequent Event [Line Items]
Warrants to purchase common stock (in shares)	9,000	120
Proceeds from issuance of warrants expected upon exercise	$ 9,000
Shares issued in conversion (in shares)		370,284
Proceeds from issuance of warrants		$ 120
Warrants Issued As Part Of 2017 Underwritten Public Offering | Warrant Tranche One | Warrant
Subsequent Event [Line Items]
Warrants to purchase common stock (in shares)	3,000
Exercise price of warrants (in USD per share)	$ 1,000
Proceeds from issuance of warrants expected upon exercise	$ 3,000
Warrants Issued As Part Of 2017 Underwritten Public Offering | Warrant Tranche Two | Warrant
Subsequent Event [Line Items]
Warrants to purchase common stock (in shares)	3,000
Exercise price of warrants (in USD per share)	$ 1,000
Proceeds from issuance of warrants expected upon exercise	$ 3,000
Warrants Issued As Part Of 2017 Underwritten Public Offering | Warrant Tranche Three | Warrant
Subsequent Event [Line Items]
Warrants to purchase common stock (in shares)	3,000
Exercise price of warrants (in USD per share)	$ 1,000
Proceeds from issuance of warrants expected upon exercise	$ 3,000