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Goodwill and Intangible Assets (Tables) | 12 Months Ended
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Dec. 31, 2013
Summary of Changes in Goodwill | The following table summarizes changes in goodwill during the year ended December 31, 2013 (in thousands):
|  | December 31, 2013 |
Balance at beginning of year |  | $ | 44,578 |
Goodwill acquired from NDS acquisition |  |  | 26,578 |
Balance at end of year |  | $ | 71,156 |
Goodwill by Reportable Segment | Goodwill by reportable segment as of December 31, 2013 is as follows (in thousands):
|  | Reportable Segment |  |  | Total |
|  | Laser Products |  |  | Medical Technologies |  |  | Precision Motion |  |
Goodwill |  | $ | 132,954 |  |  | $ | 43,565 |  |  | $ | 26,291 |  |  | $ | 202,810 |
Accumulated impairment of goodwill |  |  | (102,461 | ) |  |  | (12,147 | ) |  |  | (17,046 | ) |  |  | (131,654 | )
Total |  | $ | 30,493 |  |  | $ | 31,418 |  |  | $ | 9,245 |  |  | $ | 71,156 |
Goodwill by reportable segment as of December 31, 2012 is as follows (in thousands):
|  | Reportable Segment |  |  | Total |
|  | Laser Products |  |  | Medical Technologies |  |  | Precision Motion |  |
Goodwill |  | $ | 132,954 |  |  | $ | 16,987 |  |  | $ | 26,291 |  |  | $ | 176,232 |
Accumulated impairment of goodwill |  |  | (102,461 | ) |  |  | (12,147 | ) |  |  | (17,046 | ) |  |  | (131,654 | )
Total |  | $ | 30,493 |  |  | $ | 4,840 |  |  | $ | 9,245 |  |  | $ | 44,578 |
Intangible Assets | Intangible assets as of December 31, 2013 and 2012, respectively, are summarized as follows (in thousands):
|  | December 31, 2013 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Weighted Average Remaining Life (Years) |
Amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents and acquired technologies |  | $ | 68,500 |  |  | $ | (56,327 | ) |  | $ | 12,173 |  |  |  | 5.3 |
Customer relationships |  |  | 55,585 |  |  |  | (24,340 | ) |  |  | 31,245 |  |  |  | 13.9 |
Trademarks, trade names and other |  |  | 13,378 |  |  |  | (4,530 | ) |  |  | 8,848 |  |  |  | 16.4 |
Customer backlog |  |  | 1,269 |  |  |  | (1,269 | ) |  |  | — |  |  |  | — |
Amortizable intangible assets |  |  | 138,732 |  |  |  | (86,466 | ) |  |  | 52,266 |  |  |  | 12.3 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  |  | 13,027 |  |  |  | — |  |  |  | 13,027 |  |  |  |  |
Total |  | $ | 151,759 |  |  | $ | (86,466 | ) |  | $ | 65,293 |  |  |  |  |
|  | December 31, 2012 |
|  | Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Weighted Average Remaining Life (Years) |
Amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents and acquired technologies |  | $ | 61,667 |  |  | $ | (50,904 | ) |  | $ | 10,763 |  |  |  | 3.9 |
Customer relationships |  |  | 33,245 |  |  |  | (18,981 | ) |  |  | 14,264 |  |  |  | 6.5 |
Trademarks, trade names and other |  |  | 5,780 |  |  |  | (3,814 | ) |  |  | 1,966 |  |  |  | 6.2 |
Amortizable intangible assets |  |  | 100,692 |  |  |  | (73,699 | ) |  |  | 26,993 |  |  |  | 5.4 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  |  | 13,027 |  |  |  | — |  |  |  | 13,027 |  |  |  |  |
Total |  | $ | 113,719 |  |  | $ | (73,699 | ) |  | $ | 40,020 |  |  |  |  |
Amortization Expense of Intangible Assets | Amortization expense is as follows (in thousands):
|  | Year ended December 31, |
|  | 2013 |  |  | 2012 |  |  | 2011 |
Amortization – Cost of goods sold |  | $ | 5,280 |  |  | $ | 3,165 |  |  | $ | 3,851 |
Amortization – Operating expenses |  |  | 7,270 |  |  |  | 2,650 |  |  |  | 3,515 |
Total |  | $ | 12,550 |  |  | $ | 5,815 |  |  | $ | 7,366 |
Estimated Amortization Expense | Estimated amortization expense for each of the five succeeding years and thereafter as of December 31, 2013 is as follows (in thousands):
Year Ending December 31, |  | Cost of Goods Sold |  |  | Operating Expenses |  |  | Total |
2014 |  | $ | 4,953 |  |  | $ | 6,044 |  |  | $ | 10,997 |
2015 |  |  | 3,310 |  |  |  | 5,448 |  |  |  | 8,758 |
2016 |  |  | 1,965 |  |  |  | 5,053 |  |  |  | 7,018 |
2017 |  |  | 1,573 |  |  |  | 4,723 |  |  |  | 6,296 |
2018 |  |  | 146 |  |  |  | 4,387 |  |  |  | 4,533 |
Thereafter |  |  | 226 |  |  |  | 14,438 |  |  |  | 14,664 |
Total |  | $ | 12,173 |  |  | $ | 40,093 |  |  | $ | 52,266 |

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