Summary of Significant Accounting Principles (Tables)

3 Months Ended

Mar. 31, 2018

Accounting Policies [Abstract]

Summary of Deferred Revenues

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

	March 31,			December 31,
	2018			2017
Service activation fees	$	5,375		$	5,509
Prepaid services		2,021			2,754
Extended warranty revenues		539			459
		7,935			8,722
Less current portion		(4,631	)		(6,263	)
Long-term portion	$	3,304		$	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:

	Three Months Ended March 31,
	2018		2017
Revenue from contracts with customers:
Recurring service revenues	$	36,725	$	27,945
Other service revenues		1,267		1,567
Total service revenue		37,992		29,512
Product revenue		27,712		22,409
Total revenue from contracts with customers		65,704		51,921
Revenue recognized under ASC 840		2,269		—
Total revenues	$	67,973	$	51,921