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Subordinated Debenture (Details Textual) (USD $)
 0 Months Ended 3 Months Ended
Jun. 28, 2013
Mar. 31, 2014
Warrants issued to purchase common stock (in shares) 48,750  
Common stock exercise price (in dollars per share) $ 19.33  
Volume-weighted average share price, period (in days) 20 days  
Weighted average share price (in dollars per share) $ 30.00  
Warrant exercise price description   The warrant will become exercisable on June 28, 2014, and, unless previously exercised, will expire on June 28, 2021. The Company has the right to force an exercise of the warrant after the debenture has been repaid in full if the 20-day volume-weighted average price of a share of its common stock exceeds $30.00.
Fair value of warrants $ 255,000  
Risk free interest rate (as a percent) 0.66%  
Expected dividend rate (as a percent) 1.19%  
Expected volatility rate (as a percent) 34.00%  
Expected term (in years) 3 years  
Subordinated Debt
    
Subordinated debenture, principal amount $ 3,000,000  
Fixed annual interest rate (as a percent) 8.00%  
Subordinated debenture, maturity date Jun. 28, 2021  
Subordinated debenture, maturity date range, start Jun. 28, 2016