Warrants (Narrative) (Details) - USD ($)								1 Months Ended		3 Months Ended		4 Months Ended	6 Months Ended
	May. 11, 2015	May. 04, 2015	Apr. 29, 2015	Apr. 08, 2015	Apr. 01, 2015	Mar. 16, 2015	Dec. 22, 2011	Dec. 31, 2013	Jul. 15, 2013	Jun. 30, 2015	Mar. 31, 2015	May. 31, 2013	Jun. 30, 2015	May. 08, 2015	Dec. 31, 2014
Class of Warrant or Right [Line Items]
Sale of stock, number of shares issued in transaction								1,440,140
Sale of stock, price per share								$ 12.50		$ 0.19			$ 0.19
Number of securities called by warrants						393,939
Exercise price of warrants						$ 10.750
Warrant liquidation charges if warrants not exercised according to terms										$ 2,500,000
Warrant liability										$ 3,984,000			$ 3,984,000		$ 5,826,000
Other expenses related to issuance of warrants											$ 213,000		213,000
Gain on warrant liability													(86,000)
Shares issued upon exercise of warrants	50,000	4,717		21,420
Amount reclassified from warrant liability into equity			$ 46,000		$ 630,000
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			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						94,545		86,408
Exercise price of warrants						$ 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						$ 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							27,103
Exercise price of warrants							$ 23.00
Warrant expiration date							December 2016
Convertible Notes Payable [Member]
Class of Warrant or Right [Line Items]
Number of securities called by warrants												140,608
Exercise price of warrants												$ 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						1,575,758
Sale of stock, price per share						$ 8.250
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									600,804
Exercise price of warrants									$ 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