Loan Payable to Officer (Details) (USD $)			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 G. Ward Paxton, chief executive officer Revolving promissory note	Feb. 07, 2013 G. Ward Paxton, chief executive officer Revolving promissory note	Feb. 09, 2012 G. Ward Paxton, chief executive officer Revolving promissory note
Borrowing from Officer
Maximum borrowing capacity			$ 2,200,000	$ 2,200,000	$ 2,200,000
Floating rate base			prime rate
Percentage points added in interest rate			1.00%
Interest rate (as a percent)			5.00%
Loan payable to officer		1,530,000
Accrued interest			149,000
Loan payable to officer	$ 1,530,000		$ 1,530,000