Summary of Significant Accounting Policies Summary of Significant Accounting Policies, Accounts Receivable (Details) (USD $)			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Accounts Receivable [Member]
Accounting Policies [Abstract]
Allowance for Doubtful Accounts Receivable	$ 800,000	$ 1,100,000
Concentration Risk [Line Items]
Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure			$ 0