Accounts Receivable, Net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Provision (provision reduction) for doubtful accounts	$ (900)	$ 200	$ 965	$ 460
Reserve (reduction to reserve) for product returns			1,000	(44)
Hardware and other revenue
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reserve (reduction to reserve) for product returns	$ 700	$ 100	$ 1,000	$ (100)