General form of registration statement for all companies including face-amount certificate companies

Stockholders' equity - Common Stock and Receivable from Shareholder (Details)

v2.4.0.8
Stockholders' equity - Common Stock and Receivable from Shareholder (Details) (USD $)
 0 Months Ended 12 Months Ended
Dec. 07, 2012
Dec. 31, 2013
Dec. 31, 2012
Mar. 31, 2014
Feb. 13, 2013
Jun. 03, 2010
Class of Stock [Line Items]            
Common stock, shares outstanding   15,155,200 13,611,974 15,161,600    
Preferred stock, shares authorized         10,000,000  
Promissory note to investor           $ 345,000
Promissory note to investor, interest rate margin on Bank Prime Rate           3.00%
Promissory note to investor, shares held as collateral           287,500
Promissory note to investor, repaid with cash 105,000 0 105,000      
Promissiory note to investor, repaid with return of shares 100,000          
Promissiory note to investor, repaid with return of shares, price in usd per share $ 2.40          
Common stock
            
Class of Stock [Line Items]            
Shares of common stock issued in private placements   1,476,789 212,500      
Private placements, price in usd per share   $ 4.50        
Stock issuance costs   678,746        
Net cash proceeds from private placements   $ 5,966,805 $ 680,000      
Common stock | Maximum
            
Class of Stock [Line Items]            
Private placements, price in usd per share     $ 3.20