Summary of Significant Accounting Principles (Tables)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Summary of Deferred Revenues

Deferred revenues as of September 30, 2018 and December 31, 2017 consisted of the following:

	September 30,			December 31,
	2018			2017
Service activation fees	$	9,007		$	5,509
Prepaid services		1,162			2,754
Extended warranty revenues		232			459
		10,401			8,722
Less: current portion		(3,622	)		(6,263	)
Long-term portion	$	6,779		$	2,459

Components of Revenue from Contracts with Customers

The following table summarizes the components of revenue from contracts with customers, as well as revenue recognized under ASC 840:

	Quarters Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Revenue from contracts with customers:
Recurring service revenues	$	37,192	$	32,992	$	111,010	$	91,003
Other service revenues		1,281		2,048		3,930		4,626
Total service revenues		38,473		35,040		114,940		95,629
Product sales		31,136		31,899		90,017		80,188
Total revenue from contracts with customers		69,609		66,939		204,957		175,817
Product sales recognized under ASC 840		1,433		2,427		4,846		2,427
Total revenues	$	71,042	$	69,366	$	209,803	$	178,244