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Related Party Transactions (Details) (Maximum [Member], USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Maximum [Member]
     
Related Party Transaction [Line Items]      
Fees paid to related party firm (did not exceed) $ 120,000 $ 120,000 $ 120,000
Percentage of fee paid to related party in relation to related party's total revenue (did not exceed) 5.00% 5.00% 5.00%