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Summary of Significant Accounting Policies - Accounts Receivable and Concentration of Credit Risk (Details) (USD $)
 6 Months Ended
Jun. 30, 2012
customer
Dec. 31, 2011
customer
Accounting Policies [Abstract]    
Reserve for doubtful accounts $ 10,000 $ 10,000
Number of major customers accounting for more than ten percent of accounts receivables (customer) 2 2
Percentage of accounts receivable accounted for by major customer (percentage) 40.00% 32.00%
Entity-wide revenue, number of major customer (customers) 1  
Entity-wide revenue, major customer, percentage (percentage) 10.50%