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Related Party Transactions (Details) - Installation Partner - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Related Party Transaction [Line Items]
Ownership percentage in equity method investment	48.20%		48.20%
Equity investment in installation partner	$ 0		$ 0		$ 0
Equity Method Investee
Related Party Transaction [Line Items]
Accounts payable to related party (less than)	100,000		100,000		$ 100,000
Equity Method Investee \| Cost of Hardware and Other Revenue
Related Party Transaction [Line Items]
Expenses incurred from related party	$ 100,000	$ 100,000	$ 300,000	$ 300,000