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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 29, 2013
Summary of Changes in Goodwill | The following table summarizes changes in goodwill for the three months ended March 29, 2013 (in thousands):
|  | March 29, 2013 |
Balance at beginning of the period |  | $ | 44,578 |
Goodwill acquired from NDS acquisition |  |  | 28,693 |
Balance at end of period |  | $ | 73,271 |
Goodwill by Reportable Segment | Goodwill acquired from the NDS acquisition is reflected in the Precision Technologies segment. Goodwill by reportable segment as of March 29, 2013 is as follows (in thousands):
|  | Reportable Segment |  |  | Total |
|  | Laser Products |  |  | Precision Technologies |  |
Goodwill |  | $ | 84,592 |  |  | $ | 120,333 |  |  | $ | 204,925 |
Accumulated impairment of goodwill |  |  | (54,099 | ) |  |  | (77,555 | ) |  |  | (131,654 | )
Total |  | $ | 30,493 |  |  | $ | 42,778 |  |  | $ | 73,271 |
Goodwill by reportable segment as of December 31, 2012, as restated to conform to the current period segment presentation, is as follows (in thousands):
|  | Reportable Segment |  |  | Total |
|  | Laser Products |  |  | Precision Technologies |  |
Goodwill |  | $ | 84,592 |  |  | $ | 91,640 |  |  | $ | 176,232 |
Accumulated impairment of goodwill |  |  | (54,099 | ) |  |  | (77,555 | ) |  |  | (131,654 | )
Total |  | $ | 30,493 |  |  | $ | 14,085 |  |  | $ | 44,578 |
Intangible Assets | Intangible assets as of March 29, 2013 and December 31, 2012, respectively, are summarized as follows (in thousands):
|  | March 29, 2013 |  |  | December 31, 2012 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |
Amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents and acquired technologies |  | $ | 67,857 |  |  | $ | (51,656 | ) |  | $ | 16,201 |  |  | $ | 61,667 |  |  | $ | (50,904 | ) |  | $ | 10,763 |
Customer relationships |  |  | 54,582 |  |  |  | (20,005 | ) |  |  | 34,577 |  |  |  | 33,245 |  |  |  | (18,981 | ) |  |  | 14,264 |
Customer backlog |  |  | 3,598 |  |  |  | (3,239 | ) |  |  | 359 |  |  |  | 2,355 |  |  |  | (2,355 | ) |  |  | — |
Trademarks, trade names and other |  |  | 13,232 |  |  |  | (3,906 | ) |  |  | 9,326 |  |  |  | 5,780 |  |  |  | (3,814 | ) |  |  | 1,966 |
Amortizable intangible assets |  |  | 139,269 |  |  |  | (78,806 | ) |  |  | 60,463 |  |  |  | 103,047 |  |  |  | (76,054 | ) |  |  | 26,993 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  |  | 13,027 |  |  |  | — |  |  |  | 13,027 |  |  |  | 13,027 |  |  |  | — |  |  |  | 13,027 |
Totals |  | $ | 152,296 |  |  | $ | (78,806 | ) |  | $ | 73,490 |  |  | $ | 116,074 |  |  | $ | (76,054 | ) |  | $ | 40,020 |
Amortization Expense of Intangible Assets | Amortization expense, by classification in the consolidated statements of operations, is summarized as follows (in thousands):
|  | Three Months Ended |
|  | March 29, 2013 |  |  | March 30, 2012 |
Amortization expense - cost of sales |  | $ | 1,251 |  |  | $ | 791 |
Amortization expense - operating expenses |  |  | 2,236 |  |  |  | 662 |
Total amortization expense |  | $ | 3,487 |  |  | $ | 1,453 |
Estimated Amortization Expense | Estimated amortization expense for each of the five succeeding years and thereafter as of March 29, 2013, is as follows (in thousands):
Year Ending December 31, |  | Cost of Sales |  |  | Operating Expenses |  |  | Total |
2013 (remainder of year) |  | $ | 4,029 |  |  | $ | 4,827 |  |  | $ | 8,856 |
2014 |  |  | 4,953 |  |  |  | 5,914 |  |  |  | 10,867 |
2015 |  |  | 3,310 |  |  |  | 5,343 |  |  |  | 8,653 |
2016 |  |  | 1,965 |  |  |  | 4,968 |  |  |  | 6,933 |
2017 |  |  | 1,573 |  |  |  | 4,654 |  |  |  | 6,227 |
Thereafter |  |  | 371 |  |  |  | 18,556 |  |  |  | 18,927 |
Total |  | $ | 16,201 |  |  | $ | 44,262 |  |  | $ | 60,463 |

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