Redeemable Convertible Preferred Stock (Details)						3 Months Ended	9 Months Ended	12 Months Ended
	Jun. 20, 2016 shares	Jun. 03, 2016 USD ($) $ / shares	Apr. 08, 2016 USD ($) $ / shares shares	Apr. 07, 2016 USD ($) $ / shares	Jun. 13, 2013 $ / shares shares	Sep. 30, 2016 USD ($) $ / shares shares	Sep. 30, 2016 USD ($) $ / shares	Dec. 31, 2015 USD ($) $ / shares
Class of Stock [Line Items]
Amount reclassified to Series B from APIC to adjust redemption value							$ (1,493,000)	$ (8,971,000)
Shares of common stock issued upon conversion of preferred stock | shares			1,505,560
Exercise price of warrants | $ / shares						$ 5.87	$ 5.87	$ 8.19
Dividends payable						$ 953,000	$ 953,000
Common Stock Issuance Agreement [Member]
Class of Stock [Line Items]
Trigger price per share for requirement to issue additional shares of common stock | $ / shares		$ 2.35	$ 4.05
Shares issued per agreements | shares			853,465
Exercise price of warrants | $ / shares			$ 4.05	$ 7.00
Cash payments in respect of accrued dividends			$ 2,200,000
Warrant expiration date			Mar. 31, 2021	Jun. 26, 2018
Gross proceeds benchmark for expiration of obligation to issue shares						$ 10,000,000
Future shares of common stock approved to be issued per agreement | shares	1,037,053					286,846
Derivative liability			$ 2,300,000
Liability fair value adjustment		$ 1,500,000
Gain (loss) on remeasurement of conversion feature		$ 1,500,000
Securities Purchase Agreement [Member]
Class of Stock [Line Items]
Exercise price of warrants | $ / shares		$ 2.25
Combined per share purchase price of shares and warrants issued | $ / shares		$ 2.35
Proceeds from issuance of common stock and warrants		$ 5,000,000
Dilutive Financing Derivative Liability [Member]
Class of Stock [Line Items]
Creation of dilutive financing derivative							2,282,000
Derivative liability						$ 382,000	382,000
Liability fair value adjustment							(355,000)
Gain (loss) on remeasurement of conversion feature							(355,000)
Change in fair value of derivative liabilities						$ 988,000	$ 355,000
Series B Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized | shares					9,357,935
Preferred Stock, initial stated value per share | $ / shares					$ 1.40
Preferred Stock, par value per share | $ / shares					$ 0.01
Number of shares of common stock for which each Series B share can be converted				0.20
Preferred Stock dividend rate					10.00%
Trigger price per share for redemption and conversion features of derivative | $ / shares					$ 7.00
Amount reclassified to Series B from APIC to adjust redemption value				$ 1,868,000
Number of shares converted | shares			7,527,853