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Subsequent Events (Details) (USD $)
0 Months Ended
Feb. 21, 2014
Jan. 31, 2014
sqft
Jan. 17, 2014
Dec. 31, 2013
Subsequent Event [Line Items]        
Area of real estate under lease       58,000
Subsequent event [Member]
       
Subsequent Event [Line Items]        
Area of real estate under lease   58,000    
Revolving credit facility, maximum borrowing capacity     $ 25,000,000 $ 15,000,000
Fixed interest rate (percent)     1.75%  
Stock repurchase program, amount authorized $ 10,000,000