Litigation, Commitments and Contingencies - Contingencies (Details) - Connected Data, Inc.		6 Months Ended
	Oct. 14, 2015 USD ($) period payment	Jun. 30, 2017 USD ($) shares
Business Acquisition [Line Items]
Percentage of voting interest acquired	100.00%
Purchase price	$ 6,700,000
Future contingent consideration	$ 5,000,000
Number of potential payments | payment	3
Number of periods to achieve revenue targets | period	3
Target period duration	6 months
Payments under agreement		$ 0
Accrual for possible contingent compensation		$ 300,000
Common Stock
Business Acquisition [Line Items]
Discount rate	15.00%
Possible contingent compensation payment, number of shares (in shares) | shares		57,482
Fair Value
Business Acquisition [Line Items]
Future contingent consideration	$ 800,000