Business Acquisitions - VIEVU, LLC. Acquisition (Details) - USD ($) $ in Thousands		12 Months Ended
	May 03, 2018	Dec. 31, 2019	Dec. 31, 2018
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 25,013	$ 24,981
VIEVU
Business Acquisition [Line Items]
Estimated purchase price	$ 17,602
Cash consideration	5,000
Net of cash acquired	100
Stock options transferred	$ 2,400
Shares transferred (in shares)	58,843
Contingent consideration	$ 6,000
Contingent consideration (in shares)	141,226
Contingent consideration, fair value	$ 5,800
Intangible assets, weighted average useful life	5 years 1 month 6 days
Incurred and expensed costs	$ 800
Purchase commitments price		$ 1,200
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Accounts receivable	1,776
Inventory	2,626
Prepaid expenses and other assets	362
Property and equipment	459
Contract assets	1,472
Intangible assets	4,510
Goodwill	10,285
Accounts payable and accrued liabilities	(3,345)
Deferred revenue	(543)
Total purchase price	17,602
Supply Agreement | VIEVU
Business Acquisition [Line Items]
Fair value of intangibles	$ 4,500