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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2017
Segment Reporting [Abstract]  
Summary of Revenue by Product Type
The following table provides summary financial information by reportable segment (in thousands):

 
Year ended December 31,
 
2017 (1)
 
2016
 
2015
Video
 
 
 
 
 
Revenue
$
319,473

 
$
351,489

 
$
291,779

Gross profit
173,414

 
194,044

 
167,573

Operating income (loss)
(2,024
)
 
11,963

 
13,529

Cable Edge
 
 
 
 
 
Revenue
$
38,773

 
$
54,422

 
$
85,248

Gross profit
8,892

 
21,174

 
37,832

Operating loss
(23,154
)
 
(12,131
)
 
(1,599
)
Total
 
 
 
 
 
Revenue
$
358,246

 
$
405,911

 
$
377,027

Gross profit
182,306

 
215,218

 
205,405

Operating income (loss)
(25,178
)
 
(168
)
 
11,930


(1) The Company has historically employed an aggregate allocation methodology based on total revenues to attribute professional services revenue and sales expenses between its Video and Cable Edge segments. Beginning in the fourth quarter of 2017, the Company has prospectively changed to a more precise attribution methodology as the activities of selling and supporting the CableOS solution have become increasingly distinct from those of Video solutions. The impact of making this change in the fourth quarter of 2017 compared to the Company’s historical approach was a reduction in operating income of $2.4 million from the Video segment and a corresponding increase to the operating income of the Cable Edge segment. The Company believes that the updated allocation methodology will provide greater clarity regarding the operating metrics of the Video and Cable Edge business segments.
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]
A reconciliation of the Company’s consolidated segment operating income (loss) to consolidated loss before income taxes is as follows (in thousands):

 
Year ended December 31,
 
2017 (1)
 
2016
 
2015
Total segment operating income (loss)
$
(25,178
)
 
$
(168
)
 
$
11,930

Unallocated corporate expenses (1)
(20,767
)
 
(38,972
)
 
(2,794
)
Stock-based compensation
(16,610
)
 
(13,060
)
 
(15,582
)
Amortization of intangibles
(8,322
)
 
(14,836
)
 
(6,502
)
Consolidated loss from operations
(70,877
)
 
(67,036
)
 
(12,948
)
Non-operating expense, net
(13,830
)
 
(13,394
)
 
(3,120
)
Loss before income taxes
$
(84,707
)
 
$
(80,430
)
 
$
(16,068
)

(1) For the years ended December 31, 2017 and 2016, the unallocated corporate expenses included TVN acquisition- and integration-related costs, TVN VDP costs (see Note 10, “Restructuring and Related charges-TVN VDP,” for more information on TVN VDP ) and Cable Edge product line inventory obsolescence costs, totaling $7.9 million and $32.2 million, respectively. In addition, in fiscal year 2017, the unallocated corporate expenses included $8.0 million of Avid litigation settlement cost and associated legal fees (see Note 19, “Legal Proceedings,” for more information). The remaining unallocated corporate expenses for all years presented above include primarily other restructuring charges and excess facilities charges.
Summary of Revenue, Property and Equipment, Net by Geographic Region
 
Year ended December 31,
 
2017
 
2016
 
2015
Net revenue (1):
 
 
 
 
 
   United States
$
131,773

 
$
171,016

 
$
175,466

   Other countries
226,473

 
234,895

 
201,561

      Total
$
358,246

 
$
405,911

 
$
377,027

(1) Revenue is attributed to countries based on the location of the customer.

Other than the U.S., no single country accounted for 10% or more of the Company’s net revenues for the years ended December 31, 2017, 2016 and 2015.
Reconciliation of Assets from Segment to Consolidated [Table Text Block]
 
As of December 31,
 
2017
 
2016
Property and equipment, net:
 
 
 
   United States
$
13,786

 
$
15,197

   Israel
8,904

 
9,966

   France
4,573

 
4,872

   Other countries
2,002

 
2,129

      Total
$
29,265

 
$
32,164