Property and Equipment, Net (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Total cost	$ 9,527,785	$ 10,149,215
Less: accumulated depreciation	(4,873,258)	(4,968,659)
Property and equipment, net	4,654,527	5,180,556
Building [Member]
Property, Plant and Equipment [Line Items]
Total cost	1,657,579	1,653,263
Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	4,724,608	5,768,478
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	225,009	312,650
Computer software[Member]
Property, Plant and Equipment [Line Items]
Total cost	345,039	395,146
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Total cost	153,834	170,118
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	2,380,617	1,808,461
Vehicles [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 41,099	$ 41,099