Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating Costs and Expenses:
General and administrative	$ 2,222	$ 1,814	$ 3,935	$ 2,936
Research and development	7,508	2,837	14,002	5,554
Total Operating Costs and Expenses	9,730	4,651	17,937	8,490
Loss from Operations	(9,730)	(4,651)	(17,937)	(8,490)
Other Income (Expense):
Change in fair value of warrant liability	(3,895)	0	(8,047)	0
Other income	0	95	0	95
Interest income	2	0	3	1
Total Other Income (Expense)	(3,893)	95	(8,044)	96
Net Loss	(13,623)	(4,556)	(25,981)	(8,394)
Net Loss Attributable to Non-controlling Interest	0	0	0	0
Net Loss Attributable to Synthetic Biologics, Inc. and Subsidiaries	$ (13,623)	$ (4,556)	$ (25,981)	$ (8,394)
Net Loss Per Share - Basic and Dilutive (in dollars per share)	$ (0.19)	$ (0.08)	$ (0.36)	$ (0.14)
Net Loss Per Share Attributable to Synthetic Biologics, Inc. and Subsidiaries (in dollars per share)	$ (0.19)	$ (0.08)	$ (0.36)	$ (0.14)
Net Income (Loss) Per Share - Basic and Dilutive
Weighted average number of shares outstanding during the period - Basic and Dilutive (in shares)	72,736,829	58,453,528	72,674,650	58,348,153