Consolidated Statements of Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Issuance of common stock per share	$ 5.80
Common stock issuance cost	$ 20
March 2013 [Member]
Issuance of common stock per share		$ 4.50
Common stock issuance cost		$ 64
October 2013 [Member]
Issuance of common stock per share		$ 7.25
Common stock issuance cost		$ 3,254
May 2014 [Member]
Issuance of common stock per share	$ 5.25
Common stock issuance cost	$ 2,126
October 2014 [Member]
Issuance of common stock per share	$ 9.00
Common stock issuance cost	$ 180
IgDraSol, Inc. [Member]
Issuance of common stock per share		$ 9.25
Sherrington Pharmaceuticals, Inc. [Member]
Issuance of common stock per share		8.48
Concortis Biosystems, Corp. [Member]
Issuance of common stock per share		$ 8.48