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

Stockholders' Equity (Detail) - Assumptions Used in Calculating the Fair Value of Warrants

v2.3.0.11
Stockholders' Equity (Detail) - Assumptions Used in Calculating the Fair Value of Warrants
 1 Months Ended 12 Months Ended
Oct. 31, 2009
Dec. 31, 2011
Dec. 31, 2010
Dividend yield 0.00% 0.00% 0.00%
Expected Volatility 38.28% 46.58% 44.84%
Risk free Interest rates 1.14% 0.25% 0.61%
Expected lives (years) 2 years 54 days 9 months
Warrant [Member]
      
Dividend yield   0.00% 0.00%
Expected Volatility     44.81%
Risk free Interest rates     2.36%
Expected lives (years)   5 years 5 years
Minimum [Member] | Warrant [Member]
      
Expected Volatility   48.67%  
Risk free Interest rates   0.81%  
Maximum [Member] | Warrant [Member]
      
Expected Volatility   49.36%  
Risk free Interest rates   1.13%  
Maximum [Member]
      
Risk free Interest rates   0.45%