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Loan Payable to Officer (Details) - USD ($)
3 Months Ended
Mar. 31, 2016
Feb. 04, 2016
Dec. 31, 2015
Feb. 05, 2015
Borrowing from Officer        
Loan payable to officer $ 2,055,000   $ 1,530,000  
G. Ward Paxton, chief executive officer | Promissory note        
Borrowing from Officer        
Maximum borrowing capacity $ 2,200,000 $ 2,200,000   $ 2,200,000
Finance charge basis prime rate      
Percentage points added in interest rate 1.00%      
Interest rate (as a percent) 5.00%      
Loan payable to officer $ 2,055,000      
Accrued interest, related party $ 99,000