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Stockholders' Equity (Details 3) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Stockholders' Equity      
Common stock shares reserved for issuance under the 2012 Stock Incentive Plan 2,000,000    
Weighted Average Grant Date Fair Value      
Compensation Expense $ 793,000 $ 905,000 $ 1,192,000
Stock option
     
Stockholders' Equity      
Minimum exercise price as a percentage of fair market value of underlying shares of common stock 100.00%    
Expiration term of options 8 years    
Vesting period 6 years    
Minimum period to retain common stock after exercise of options 1 year    
Vesting percentage on each anniversary of the grant date 20.00%    
Shares available for granting options or stock awards 832,177    
Fair value of stock options vested     1,000
Nonvested restricted stock
     
Number of Shares      
Nonvested at the beginning of the period (in shares) 720,900    
Granted (in shares) 194,000    
Forfeited (in shares) (12,400)    
Vested (in shares) (149,100)    
Nonvested at the end of the period (in shares) 753,400 720,900  
Weighted Average Grant Date Fair Value      
Nonvested at the beginning of the period (in dollars per share) $ 4.89    
Granted (in dollars per share) $ 2.14 $ 3.40 $ 3.78
Forfeited (in dollars per share) $ 4.59    
Vested (in dollars per share) $ 6.61    
Nonvested at the end of the period (in dollars per share) $ 3.85 $ 4.89  
Service period to amortize aggregate market value of the nonvested restricted stock 6 years    
Fair value of shares vested 986,000 1,025,000 940,000
Compensation Expense 793,000 905,000 1,192,000
Deferred compensation cost related to nonvested restricted stock $ 1,507,000    
Weighted-average period to recognize deferred compensation cost related to nonvested restricted stock 3 years 2 months 12 days