Commitments and contingencies (Details) (USD $)			0 Months Ended			0 Months Ended	13 Months Ended			0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Nov. 01, 2011 Santa Barbara Operating units item sqft	Jun. 30, 2014 Santa Barbara Operating units	Jun. 30, 2012 Santa Barbara Operating units	Aug. 01, 2011 Los Angeles sqft	May 31, 2013 Los Angeles	Jun. 30, 2014 Los Angeles	Apr. 30, 2012 Los Angeles	Aug. 01, 2011 Los Angeles Minimum	Aug. 01, 2011 Los Angeles Maximum
Office Space Rental
Office area under lease			3,000			7,000
Unpaid rent					$ 229,000				$ 892,000
Rent liability for facilities no longer occupied	1,121,495	1,121,495		229,000				892,000
Monthly rent			$ 7,157			$ 19,326	$ 2,300
Annual increase in rent (as a percent)						3.00%
Period for which fixed monthly rent is not required to be paid										2 months	5 years
Number of extension option			2
Renewal term			3 years