Long term obligations (Details 1) $ in Thousands	12 Months Ended
	Dec. 31, 2014 USD ($)
Debt Instrument [Line Items]
Finite-lived Intangible Assets Acquired	$ 1,205
Prepaid expenses and other current assets [Member]
Debt Instrument [Line Items]
Finite-lived Intangible Assets Acquired	356
Other assets [Member]
Debt Instrument [Line Items]
Finite-lived Intangible Assets Acquired	713
Property and equipment [Member]
Debt Instrument [Line Items]
Finite-lived Intangible Assets Acquired	$ 136