Warrants (Narrative) (Details)											1 Months Ended	3 Months Ended			4 Months Ended	9 Months Ended
	Aug. 13, 2015 shares	Aug. 03, 2015 USD ($) shares	Jul. 16, 2015 shares	May. 11, 2015 shares	May. 04, 2015 shares	Apr. 29, 2015 USD ($) shares	Apr. 08, 2015 shares	Apr. 01, 2015 USD ($) shares	Mar. 16, 2015 USD ($) $ / shares shares	Dec. 22, 2011 $ / shares shares	Jul. 15, 2013 USD ($) $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares	Mar. 31, 2015 USD ($)	Sep. 30, 2014 USD ($)	May. 31, 2013 $ / shares shares	Sep. 30, 2015 USD ($) $ / shares shares	Sep. 30, 2014 USD ($)	Aug. 02, 2015 shares	May. 08, 2015 USD ($)	Dec. 31, 2014 USD ($) shares	Dec. 31, 2013 $ / shares shares
Class of Warrant or Right [Line Items]
Shares issued in transaction | shares																					1,440,140
Sale of stock, price per share | $ / shares												$ 3.95				$ 3.95					$ 12.50
Number of securities called by warrants | shares									393,939
Exercise price of warrants | $ / shares									$ 10.75
Warrant liquidation charges if warrants not exercised according to terms																$ 2,500,000
Warrant liability												$ 10,000				10,000				$ 5,826,000
Other expenses related to issuance of warrants													$ 213,000			$ 213,000
Shares issued upon exercise of warrants | shares	100,000		52,500	50,000	4,717		21,420									228,637
Amount reclassified from warrant liability into equity		$ 3,281,000				$ 46,000		$ 630,000
Reverse stock split, description		1-for-50 (1:50) reverse stock split of its common stock, par value $0.01 per share
Conversion ratio of reverse stock split		50
Common stock, shares authorized | shares		670,000,000										670,000,000				670,000,000		445,000,000		445,000,000
Fair value of liquidated damages reclassified to shareholders' equity		$ 120,000
Gain (loss) on remeasurement of fair value of warrant liability												$ 693,000		$ 7,079,000		$ 607,000	$ 9,245,000
Series B Placement - June 26, 2013 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant liability											$ 4,285,000
Shares issued upon exercise of warrants | shares						4,524		52,120
Series B Placement - July 15, 2013 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant liability											$ 674,000
Investors [Member]
Class of Warrant or Right [Line Items]
Warrant liability									$ 3,396,000
Placement Agent [Member]
Class of Warrant or Right [Line Items]
Number of securities called by warrants | shares									94,548												86,408
Exercise price of warrants | $ / shares									$ 10.750												$ 12.50
Warrant liability									$ 814,000
Other expenses related to issuance of warrants																$ 218,000
Down Round Position [Member]
Class of Warrant or Right [Line Items]
Exercise price of warrants | $ / shares									$ 8.250
Amount reclassified from warrant liability into equity																			$ 5,462,000
Biocontrol Business Combination [Member]
Class of Warrant or Right [Line Items]
Number of securities called by warrants | shares										27,103
Exercise price of warrants | $ / shares										$ 23.00
Warrant expiration date										December 2016
Convertible Notes Payable [Member]
Class of Warrant or Right [Line Items]
Number of securities called by warrants | shares															140,608
Exercise price of warrants | $ / shares															$ 7.00
Warrant expiration date															February through May 2018
Private Placement [Member]
Class of Warrant or Right [Line Items]
Sale of stock, number of shares issued in transaction | shares									1,575,758
Shares issued in transaction | shares									1,575,758
Sale of stock, price per share | $ / shares									$ 8.250
Number of securities called by warrants | shares									393,948
Exercise price of warrants | $ / shares									$ 10.750
Warrant liability									$ 4,210,000
Warrant expiration date												March 2020
Private Placement - Series B Preferred Stock [Member]
Class of Warrant or Right [Line Items]
Number of securities called by warrants | shares											600,804
Exercise price of warrants | $ / shares											$ 7.00
Private Placement - Series B Preferred Stock [Member] | Series B Placement - June 26, 2013 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant expiration date											June 2018
Private Placement - Series B Preferred Stock [Member] | Series B Placement - July 15, 2013 Warrants [Member]
Class of Warrant or Right [Line Items]
Warrant expiration date											July 2018
Private Placement - Series B Preferred Stock [Member] | Placement Agent [Member]
Class of Warrant or Right [Line Items]
Warrant liability											$ 759,000