Condensed Consolidated Balance Sheets (unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Property and equipment, accumulated depreciation (in dollars)	$ 1,401	$ 1,242
Intangible assets, accumulated amortization (in dollars)	$ 0	$ 2,204
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (shares)	5,000,000	5,000,000
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (shares)	150,000,000	100,000,000
Common stock, shares issued (shares)	43,898,785	43,898,785
Common stock, shares outstanding (shares)	43,898,785	43,898,785