Notes Payable - Summary of Gain on Settlement Agreement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Debt Disclosure [Abstract]
Reduction of principal (including adjustment for imputed interest at 9.5%)			$ 3,226
Forgiveness of interest accrued to the date of settlement			461
Gain on settlement agreement	$ 3,687		$ 3,687