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Segment Information (Tables) | 6 Months Ended
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Jun. 29, 2018
Segment Reporting [Abstract] |
Segment Reporting Information, by Segment | The following table provides summary financial information by reportable segment (in thousands):
| Three months ended | Six months ended
| June 29, 2018 (1) |  | June 30, 2017 | June 29, 2018 |  | June 30, 2017
Video |  |  |  |  |  |
Revenue | $ | 79,208 |  |  | $ | 73,379 |  | $ | 150,956 |  |  | $ | 147,721 |
Gross profit | 43,558 |  |  | 37,720 |  | 84,784 |  |  | 78,493 |
Operating income (loss) | 6,239 |  |  | (8,947 | ) | 8,234 |  |  | (14,783 | )
Cable Access |  |  |  |  |  |  |  |
Revenue | $ | 20,236 |  |  | $ | 8,936 |  | $ | 38,726 |  |  | $ | 17,537 |
Gross profit | 10,187 |  |  | 1,699 |  | 18,827 |  |  | 3,909 |
Operating income (loss) | 540 |  |  | (7,411 | ) | (973 | ) |  | (13,491 | )
Total |  |  |  |  |  |
Revenue | $ | 99,444 |  |  | $ | 82,315 |  | $ | 189,682 |  |  | $ | 165,258 |
Gross profit | 53,745 |  |  | 39,419 |  | 103,611 |  |  | 82,402 |
Operating income (loss) | 6,779 |  |  | (16,358 | ) | 7,261 |  |  | (28,274 | )
(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 Access 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 three and six months ended June 30, 2017 compared to the Company’s historical approach was an increase in operating loss of $2.1 million and $3.2 million, respectively, from the Video segment and a corresponding decrease in operating loss of the Cable Access segment. The Company believes that the updated allocation methodology will provide greater clarity regarding the operating metrics of the Video and Cable Access business segments. A reconciliation of the Company’s consolidated segment operating income (loss) to consolidated loss before income taxes is as follows (in thousands):
| Three months ended | Six months ended
| June 29, 2018 |  | June 30, 2017 | June 29, 2018 |  | June 30, 2017
Total segment operating income (loss) | $ | 6,779 |  |  | $ | (16,358 | ) | $ | 7,261 |  |  | $ | (28,274 | )
Amortization of warrants | (284 | ) |  | — |  | (395 | ) |  | — |
Unallocated corporate expenses | (746 | ) |  | (4,853 | ) | (2,588 | ) |  | (8,775 | )
Stock-based compensation | (3,012 | ) |  | (4,136 | ) | (8,769 | ) |  | (7,387 | )
Amortization of intangibles | (2,095 | ) |  | (2,075 | ) | (4,194 | ) |  | (4,144 | )
Income (loss) from operations | 642 |  |  | (27,422 | ) | (8,685 | ) |  | (48,580 | )
Non-operating expense, net | (2,664 | ) |  | (3,499 | ) | (5,953 | ) |  | (6,600 | )
Loss before income taxes | $ | (2,022 | ) |  | $ | (30,921 | ) | $ | (14,638 | ) |  | $ | (55,180 | )
Unallocated Corporate Expenses Together with amortization of intangibles and stock-based compensation, the Company does not allocate restructuring and related charges, TVN acquisition- and integration-related costs, and certain other non-recurring charges to the operating income (loss) for each segment because management does not include this information in the measurement of the performance of the operating segments. A measure of assets by segment is not applicable as segment assets are not included in the discrete financial information provided to the CODM.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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