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Deferred Revenues (Tables)
 9 Months Ended
Sep. 30, 2015
Deferred Revenue Disclosure [Abstract]  
Summary of Deferred Revenues

Deferred revenues consisted of the following:

 

 

 

September 30,

 

 

December 31,

 

 

 

2015

 

 

2014

 

Service activation fees

 

$

4,568

 

 

$

3,411

 

Prepaid services

 

 

2,644

 

 

 

2,509

 

Prepaid product revenues

 

 

—

 

 

 

15

 

Warranty revenues

 

 

141

 

 

 

169

 

 

 

 

7,353

 

 

 

6,104

 

Less current portion

 

 

(4,821

)

 

 

(3,525

)

Long-term portion

 

$

2,532

 

 

$

2,579