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Segment Information (Tables) | 9 Months Ended
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Oct. 28, 2018
Segment Reporting Information [Line Items] |
Net Sales by Segment | Net sales by segment are as follows:
| Three Months Ended |  | Nine Months Ended
(in thousands) | October 28, 2018 |  | October 29, 2017 |  | October 28, 2018 |  | October 29, 2017
Semiconductor Products Group | $ | 173,550 |  |  | $ | 150,304 |  |  | $ | 467,190 |  |  | $ | 447,233 |
Total | $ | 173,550 |  |  | $ | 150,304 |  |  | $ | 467,190 |  |  | $ | 447,233 |
Income by Segment and Reconciliation to Consolidated Operating Income | Income by segment and reconciliation to consolidated operating income:
| Three Months Ended |  | Nine Months Ended
(in thousands) | October 28, 2018 |  | October 29, 2017 |  | October 28, 2018 |  | October 29, 2017
Semiconductor Products Group | $ | 52,738 |  |  | $ | 42,828 |  |  | $ | 140,660 |  |  | $ | 124,906 |
Operating income by segment | 52,738 |  |  | 42,828 |  |  | 140,660 |  |  | 124,906 |
Items to reconcile segment operating income to consolidated income before taxes |  |  |  |  |  |  |
Share-based compensation | 11,466 |  |  | 15,356 |  |  | 60,947 |  |  | 44,166 |
Intangible amortization | 6,480 |  |  | 7,453 |  |  | 19,921 |  |  | 20,414 |
Investment impairments, net of offsets | 30,000 |  |  | 4,000 |  |  | 30,000 |  |  | 4,000 |
Changes in the fair value of contingent earn-out obligations | (8,519 | ) |  | 188 |  |  | (9,419 | ) |  | 188 |
Litigation cost net of recoveries | (264 | ) |  | — |  |  | (5,476 | ) |  | — |
Other non-segment related expenses | 1,708 |  |  | 2,252 |  |  | 2,981 |  |  | 5,221 |
Amortization of fair value adjustments related to acquired property, plant and equipment | — |  |  | — |  |  | — |  |  | 190 |
Interest expense, net | 2,355 |  |  | 2,032 |  |  | 6,745 |  |  | 6,107 |
Non-operating expense, net | (1,182 | ) |  | (5,267 | ) |  | (1,914 | ) |  | (4,431 | )
Income before taxes | $ | 10,694 |  |  | $ | 16,814 |  |  | $ | 36,875 |  |  | $ | 49,051 |
Net Sales Activity By Product Line | The table below provides net sales activity by product line on a comparative basis:
| Three Months Ended |  | Nine Months Ended
(in thousands, except percentages) | October 28, 2018 |  | October 29, 2017 |  | October 28, 2018 |  | October 29, 2017
Signal Integrity | $ | 69,981 |  |  | 40 | % |  | $ | 63,921 |  |  | 42 | % |  | $ | 204,381 |  |  | 44 | % |  | $ | 198,645 |  |  | 43 | %
Protection | 53,085 |  |  | 31 | % |  | 49,366 |  |  | 33 | % |  | 139,875 |  |  | 30 | % |  | 136,673 |  |  | 31 | %
Wireless and Sensing | 50,484 |  |  | 29 | % |  | 43,266 |  |  | 29 | % |  | 144,435 |  |  | 31 | % |  | 126,641 |  |  | 29 | %
Other: Warrant Shares (1) | — |  |  | — | % |  | (6,249 | ) |  | (4 | )% |  | (21,501 | ) |  | (5 | )% |  | (14,726 | ) |  | (3 | )%
Total net sales | $ | 173,550 |  |  | 100 | % |  | $ | 150,304 |  |  | 100 | % |  | $ | 467,190 |  |  | 100 | % |  | $ | 447,233 |  |  | 100 | %
Schedule of Revenue from External Customers by Sales Channel |
| Three Months Ended |  | Nine Months Ended
(in thousands) | October 28, 2018 |  | October 29, 2017 |  | October 28, 2018 |  | October 29, 2017
Distributor | $ | 120,009 |  |  | $ | 103,463 |  |  | $ | 332,304 |  |  | $ | 298,089 |
Direct | 53,541 |  |  | 53,090 |  |  | 156,387 |  |  | 163,870 |
Other: Warrant Shares | — |  |  | (6,249 | ) |  | (21,501 | ) |  | (14,726 | )
Total net sales | $ | 173,550 |  |  | $ | 150,304 |  |  | $ | 467,190 |  |  | $ | 447,233 |
Net Sales Activity By Geographic Region | Net sales activity by geographic region is as follows:
| Three Months Ended |  | Nine Months Ended
| October 28, 2018 |  | October 29, 2017 |  | October 28, 2018 |  | October 29, 2017
Asia-Pacific | 77 | % |  | 75 | % |  | 74 | % |  | 74 | %
North America | 16 | % |  | 21 | % |  | 26 | % |  | 21 | %
Europe | 7 | % |  | 8 | % |  | 7 | % |  | 8 | %
Other: Warrant Shares | — | % |  | (4 | )% |  | (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 |  | Nine Months Ended
(percentage of total sales) | October 28, 2018 |  | October 29, 2017 |  | October 28, 2018 |  | October 29, 2017
China (including Hong Kong) | 55 | % |  | 50 | % |  | 54 | % |  | 50 | %
United States | 10 | % |  | 9 | % |  | 11 | % |  | 9 | %

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