Summary of Significant Accounting Policies - Accounts Receivable and Concentration of Credit Risk (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Accounts Receivable and Concentration of Credit Risk
Reserve for accounts deemed uncollectible (as a percent)	100.00%
Allowance for doubtful accounts reserve balance	$ 192,000	$ 94,000
Minimum
Accounts Receivable and Concentration of Credit Risk
Age of doubtful accounts	60 days
Age 61 to 90 Days
Accounts Receivable and Concentration of Credit Risk
Reserve for doubtful accounts (as a percent)	5.00%
Age 61 to 90 Days | Minimum
Accounts Receivable and Concentration of Credit Risk
Age of doubtful accounts	61 days
Age 61 to 90 Days | Maximum
Accounts Receivable and Concentration of Credit Risk
Age of doubtful accounts	90 days
Age Over 90 Days
Accounts Receivable and Concentration of Credit Risk
Reserve for doubtful accounts (as a percent)	20.00%
Age Over 90 Days | Minimum
Accounts Receivable and Concentration of Credit Risk
Age of doubtful accounts	90 days