Construction Backlog (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Summary of signed engineering and project management contracts
Balance - January 1	$ 18,419	$ 35,789
New contracts and change orders during the period	2,291,337	510,522
New contracts and change orders during period, gross	2,309,756	546,311
Less: contract revenue earned during the period	(922,507)	(527,892)
New contracts and change orders during period net	1,387,249	18,419
Contracts signed but not started
Balance - December 31	$ 1,387,249	$ 18,419