Notes Payable (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Balances of the Company's notes payable
Total notes payable	$ 16,747,444	$ 17,755,676
Current portion of notes payable	(4,438,175)	(4,219,720)
Notes payable, less current portion	12,309,269	13,535,956
Revolving Line of Credit [Member] | Working Capital Loan [Member]
Balances of the Company's notes payable
Maturity Date	Jan. 16, 2014
Note payable balance	0	0
Secured Loan [Member] | $6.94 Million Equipment Loan [Member]
Balances of the Company's notes payable
Maturity Date	Feb. 22, 2016
Note payable balance	4,576,496	4,931,781
Secured Loan [Member] | $1.5 Million Equipment Loan [Member]
Balances of the Company's notes payable
Maturity Date	Oct. 17, 2016
Note payable balance	1,357,500	1,443,000
Secured Loan [Member] | $4.25 Million Equipment Loan [Member]
Balances of the Company's notes payable
Maturity Date	Sep. 19, 2016
Note payable balance	4,152,000	4,250,000
Secured Loan [Member] | $7.94 Million Installment Sale Contract [Member]
Balances of the Company's notes payable
Maturity Date	Jul. 17, 2016
Note payable balance	$ 6,661,448	$ 7,130,895