Property and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 4,488,374	$ 4,486,771
Depreciation expense	554,100	500,600	533,300
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	3,812,692	3,523,428
Computer software and office equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	2,444,383	2,381,345
Warehouse equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	234,625	235,632
Automotive equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,717	14,717
Depreciable assets [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	6,506,417	6,155,122
Less: accumulated depreciation	3,159,216	2,809,524
Property and equipment, net	3,347,201	3,345,598
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, net	$ 1,141,173	$ 1,141,173