Property and Equipment (Details 1)	12 Months Ended
	Dec. 31, 2012
Software [Member]
Schedule of estimated useful lives of property plant and equipment
Property and equipment, estimated useful life (in years)	3
Furniture and equipment [Member]
Schedule of estimated useful lives of property plant and equipment
Property and equipment, estimated useful life (in years)	5 to 7
Leasehold Improvements [Member]
Schedule of estimated useful lives of property plant and equipment
Property and equipment, estimated useful life (in years)	5 to 15
Buildings [Member]
Schedule of estimated useful lives of property plant and equipment
Property and equipment, estimated useful life (in years)	40