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Accrued Sales Taxes and Regulatory Fees	12 Months Ended
Accrued Sales Taxes and Regulatory Fees	Dec. 31, 2014
Accrued Sales Tax and Regulated Fees [Abstract]
Accrued Sales Taxes and Regulatory Fees	Accrued Sales Taxes and Regulatory Fees Included in accrued sales taxes and regulatory fees are (i) certain estimated sales and use taxes, regulatory fees and (ii) sales taxes and regulatory fees collected from customers that are to be remitted to taxing authorities. Our accrual as of December 31, 2014 includes estimates for taxes due where we plan to proactively contact various taxing authorities and voluntarily disclose potential sales and use tax liabilities. Accrued sales taxes and regulatory fees as of December 31, 2014 and 2013 are $444,000 and $590,000, respectively.