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Segment Information (Tables) | 6 Months Ended
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Jul. 29, 2018
Segment Reporting Information [Line Items] |
Net Sales by Segment | Net sales by segment are as follows:
| Three Months Ended |  | Six Months Ended
(in thousands) | July 29, 2018 |  | July 30, 2017 |  | July 29, 2018 |  | July 30, 2017
Semiconductor Products Group | $ | 163,211 |  |  | $ | 153,127 |  |  | $ | 293,640 |  |  | $ | 296,929 |
Total | $ | 163,211 |  |  | $ | 153,127 |  |  | $ | 293,640 |  |  | $ | 296,929 |
Income by Segment and Reconciliation to Consolidated Operating Income | Income by segment and reconciliation to consolidated operating income:
| Three Months Ended |  | Six Months Ended
(in thousands) | July 29, 2018 |  | July 30, 2017 |  | July 29, 2018 |  | July 30, 2017
Semiconductor Products Group | $ | 47,110 |  |  | $ | 42,856 |  |  | $ | 87,922 |  |  | $ | 82,078 |
Operating income by segment | 47,110 |  |  | 42,856 |  |  | 87,922 |  |  | 82,078 |
Items to reconcile segment operating income to consolidated income before taxes |  |  |  |  |  |  |
Share-based compensation | 13,966 |  |  | 15,525 |  |  | 49,481 |  |  | 28,810 |
Intangible amortization | 6,480 |  |  | 6,675 |  |  | 13,441 |  |  | 12,961 |
Changes in the fair value of contingent earn-out obligations | (900 | ) |  | — |  |  | (900 | ) |  | — |
Litigation cost net of recoveries | (6,632 | ) |  | — |  |  | (6,632 | ) |  | — |
Other non-segment related expenses | 1,260 |  |  | 1,764 |  |  | 2,693 |  |  | 2,969 |
Amortization of fair value adjustments related to acquired property, plant and equipment | — |  |  | — |  |  | — |  |  | 190 |
Interest expense, net | 2,200 |  |  | 2,029 |  |  | 4,390 |  |  | 4,075 |
Non-operating expense, net | (542 | ) |  | 204 |  |  | (732 | ) |  | 836 |
Income before taxes | $ | 31,278 |  |  | $ | 16,659 |  |  | $ | 26,181 |  |  | $ | 32,237 |
Net Sales Activity By Product Line | The table below provides net sales activity by product line on a comparative basis:
| Three Months Ended |  | Six Months Ended
(in thousands, except percentages) | July 29, 2018 |  | July 30, 2017 |  | July 29, 2018 |  | July 30, 2017
Signal Integrity | $ | 68,802 |  |  | 42 | % |  | $ | 66,666 |  |  | 44 | % |  | $ | 134,401 |  |  | 45 | % |  | $ | 134,724 |  |  | 46 | %
Protection | 45,999 |  |  | 28 | % |  | 45,058 |  |  | 29 | % |  | 86,791 |  |  | 30 | % |  | 87,307 |  |  | 29 | %
Wireless and Sensing | 48,410 |  |  | 30 | % |  | 44,600 |  |  | 29 | % |  | 93,949 |  |  | 32 | % |  | 83,375 |  |  | 28 | %
Other: Warrant Shares (1) | — |  |  | — | % |  | (3,197 | ) |  | (2 | )% |  | (21,501 | ) |  | (7 | )% |  | (8,477 | ) |  | (3 | )%
Total net sales | $ | 163,211 |  |  | 100 | % |  | $ | 153,127 |  |  | 100 | % |  | $ | 293,640 |  |  | 100 | % |  | $ | 296,929 |  |  | 100 | %
Schedule of Revenue from External Customers by Sales Channel |
| Three Months Ended |  | Six Months Ended
(in thousands) | July 29, 2018 |  | July 30, 2017 |  | July 29, 2018 |  | July 30, 2017
Distributor | $ | 109,844 |  |  | $ | 100,121 |  |  | $ | 212,317 |  |  | $ | 194,643 |
Direct | 53,367 |  |  | 56,203 |  |  | 102,824 |  |  | 110,763 |
Other: Warrant Shares | — |  |  | (3,197 | ) |  | (21,501 | ) |  | (8,477 | )
Total net sales | $ | 163,211 |  |  | $ | 153,127 |  |  | $ | 293,640 |  |  | $ | 296,929 |
Net Sales Activity By Geographic Region | Net sales activity by geographic region is as follows:
| Three Months Ended |  | Six Months Ended
| July 29, 2018 |  | July 30, 2017 |  | July 29, 2018 |  | July 30, 2017
Asia-Pacific | 75 | % |  | 73 | % |  | 72 | % |  | 75 | %
North America | 19 | % |  | 21 | % |  | 28 | % |  | 21 | %
Europe | 6 | % |  | 8 | % |  | 7 | % |  | 7 | %
Other: Warrant Shares | — | % |  | (2 | )% |  | (7 | )% |  | (3 | )%
| 100 | % |  | 100 | % |  | 100 | % |  | 100 | %
Summary Of Sales Activity To Countries That Represented Greater Than 10% Of Total Net Sales | The table below summarizes sales activity to countries that represented greater than 10% of total net sales for at least one of the periods presented:
| Three Months Ended |  | Six Months Ended
(percentage of total sales) | July 29, 2018 |  | July 30, 2017 |  | July 29, 2018 |  | July 30, 2017
China (including Hong Kong) | 56 | % |  | 49 | % |  | 53 | % |  | 50 | %
United States | 10 | % |  | 9 | % |  | 12 | % |  | 9 | %

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