Summary of significant accounting policies (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	May 03, 2013
Class of Stock [Line Items]
Convertible Preferred Stock, Shares Issued upon Conversion (in shares)	15,512		15,512		100,000
Warrants Antidilutive	3,015,807		3,015,807
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	177,336		177,336
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		6		6
FanTD LLC [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	300,000		300,000