Business Acquisitions (Details) - VIEVU, LLC - USD ($)		9 Months Ended
	May 03, 2018	Sep. 30, 2018
Business Acquisition [Line Items]
Purchase price	$ 17,602,000
Cash consideration	5,000,000
Net of cash acquired	100,000
Stock options transferred	$ 2,400,000
Shares transferred (in shares)	58,843
Contingent consideration	$ 6,000,000.0
Contingent consideration (in shares)	141,226
Contingent consideration, fair value	$ 5,800,000
Weighted average useful life		5 years 1 month 6 days
Revenue		$ 5,400,000
(Loss) from Operations		(2,600,000)
Incurred and expensed costs		800,000
Expenses, subsequent to acquisition date		500,000
Supply Agreement
Business Acquisition [Line Items]
Fair value of intangibles		$ 4,500,000