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Stock-Based Compensation (Details) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended
Nov. 30, 2009
Employee Options 2009
Jun. 30, 2013
Employee Options 2009
Jun. 30, 2012
Employee Options 2009
Jun. 30, 2013
Employee Options 2009
Jun. 30, 2012
Employee Options 2009
Jan. 31, 2012
Employee Options 2012
Jun. 30, 2013
Employee Options 2012
Jun. 30, 2012
Employee Options 2012
Jun. 30, 2013
Employee Options 2012
Jun. 30, 2012
Employee Options 2012
Stock-Based Compensation (Textual) [Abstract]                    
Employee options granted to purchase shares of common stock 300,000     300,000   100,000     100,000  
Exercise price of employee option shares of common stock $ 14.97         $ 28.98        
Options vest and become exercisable annually 75,000         25,000        
Options Vested   150,000   150,000     25,000   25,000  
Options outstanding   300,000   300,000     100,000   100,000  
Total stock-based compensation   $ 187,000 $ 187,000 $ 375,000 $ 375,000   $ 119,000 $ 119,000 $ 238,000 $ 219,000
Unrecognized stock-based compensation expense   $ 750,000   $ 750,000     $ 1,200,000   $ 1,200,000  
Expected duration for recognition of stock based compensation expense       1 year 0 months         2 years 7 months  
Share based payment award, options, valuation assumption, forfeiture rate                 0.00%