Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Concentration Risk [Line Items]
Impairment of goodwill	$ 36,700,000	$ 36,666,000	$ 0	$ 192,000
Advertising expense		$ 200,000	$ 100,000	$ 100,000
Credit Concentration Risk | Sales Revenue
Concentration Risk [Line Items]
Number of customers		5	5,000
Concentration risk (as a percent)		61.20%	51.30%
Credit Concentration Risk | Accounts Receivable
Concentration Risk [Line Items]
Concentration risk (as a percent)		65.50%	42.30%