Equity (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Mar. 08, 2017	Mar. 07, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Mar. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Preferred stock, shares authorized (shares)			5,000,000		5,000,000			5,000,000
Preferred stock, par value (in dollars per share)			$ 0.001		$ 0.001			$ 0.001
Proceeds from 2017 Series A Preferred Stock Offering, (net of offering costs of $377)					$ 7,623	$ 0
Deemed dividend on preferred stock			$ 111	$ 0	3,981	0
Dividend paid in-kind to preferred stockholders					$ 182	$ 0
Series A Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (shares)			8,000		8,000		8,000	0
Preferred stock, shares issued (shares)			8,000		8,000			0
Dividend paid in-kind to preferred stockholders			$ 100		$ 200
Private Placement
Class of Stock [Line Items]
Percent of conversion shares		100.00%
Private Placement | Series A Convertible Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)		$ 1,000
Preferred stock, shares issued (shares)		1
Conversion price (usd per share)		$ 2.3271
Proceeds from 2017 Series A Preferred Stock Offering, (net of offering costs of $377)	$ 8,000	$ 1,300
Dividend rate per year for first five years		4.00%
Deemed dividend on preferred stock			100		4,000
Period of initial dividend rate		5 years
Dividend rate after five years		8.00%
Interest rate (as a percent)		3.15%
Credit spread		31.27%
Market yield		34.42%
Beneficial conversion feature		$ 3,700
Ownership percentage		70.00%
Private Placement | The Units
Class of Stock [Line Items]
Number of units sold (shares)		8,000
Purchase price (usd per share)		$ 1,000
Warrant
Class of Stock [Line Items]
Proceeds from 2017 Series A Preferred Stock Offering, (net of offering costs of $377)					3,000
Deemed dividend on preferred stock			$ 100		$ 200
Interest rate (as a percent)					2.08%
Discount		$ 3,000