Leases - Additional Information (Details) (USD $)	1 Months Ended	12 Months Ended
	Jan. 31, 2012 Number	Dec. 31, 2012	Dec. 31, 2011
Capital Leased Assets [Line Items]
Payment of capital leases		$ 158,998	$ 105,383
Payment under operating lease		6,000	36,000
Annual rental payment	10,000
Number of railcars leased	1,200
Related party operating lease agreement
Capital Leased Assets [Line Items]
Leased facility rate per car	300
Leases equipment used in operations
Capital Leased Assets [Line Items]
Payment of capital leases		$ 194,832	$ 105,383