Related Party Transactions (Details) (USD $)	3 Months Ended
Sep. 30, 2012 Companies NumberCustomers	Sep. 30, 2011 Companies NumberCustomers	Dec. 31, 2011
Related Party Transactions [Abstract]
Related party transactions, number of companies	2	2
Accounts receivable, related pary transactions, number of companys	2	2
Accounts receivable, related parties, current	$ 82,000		$ 48,000
Rent due to related parties	$ 1,400,000

Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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