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Goodwill, Intangible Assets and Impairment Charges (Tables) | 12 Months Ended
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Dec. 31, 2015
Goodwill And Intangible Assets Disclosure [Abstract] |
Summary of Changes in Goodwill | The following table summarizes changes in goodwill during the year ended December 31, 2015 (in thousands):
| December 31, 2015 |
Balance at beginning of year | $ | 90,746 |
Goodwill acquired from the Applimotion acquisition |  | 7,672 |
Goodwill acquired from the Lincoln Laser acquisition |  | 3,367 |
Goodwill acquired from the Skyetek acquisition |  | 1,671 |
Balance at end of year | $ | 103,456 |
Goodwill by Reportable Segment | Goodwill by reportable segment as of December 31, 2015 is as follows (in thousands):
| Reportable Segment |  |  |  |  |
| Laser Products |  |  | Vision Technologies |  |  | Precision Motion |  |  | Total |
Goodwill | $ | 136,321 |  |  | $ | 84,401 |  |  | $ | 33,963 |  |  | $ | 254,685 |
Accumulated impairment of goodwill |  | (102,461 | ) |  |  | (31,722 | ) |  |  | (17,046 | ) |  |  | (151,229 | )
Total | $ | 33,860 |  |  | $ | 52,679 |  |  | $ | 16,917 |  |  | $ | 103,456 |
Goodwill by reportable segment as of December 31, 2014 is as follows (in thousands):
| Reportable Segment |  |  |  |  |
| Laser Products |  |  | Vision Technologies |  |  | Precision Motion |  |  | Total |
Goodwill | $ | 132,954 |  |  | $ | 82,730 |  |  | $ | 26,291 |  |  | $ | 241,975 |
Accumulated impairment of goodwill |  | (102,461 | ) |  |  | (31,722 | ) |  |  | (17,046 | ) |  |  | (151,229 | )
Total | $ | 30,493 |  |  | $ | 51,008 |  |  | $ | 9,245 |  |  | $ | 90,746 |
Intangible Assets | Intangible assets as of December 31, 2015 and 2014, respectively, are summarized as follows (in thousands):
| December 31, 2015 |
| Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Weighted Average Remaining Life (Years) |
Amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents and acquired technologies | $ | 82,821 |  |  | $ | (66,297 | ) |  | $ | 16,524 |  |  |  | 7.7 |
Customer relationships |  | 67,168 |  |  |  | (36,914 | ) |  |  | 30,254 |  |  |  | 13.6 |
Customer backlog |  | 2,644 |  |  |  | (2,589 | ) |  |  | 55 |  |  |  | 1.0 |
Non-compete covenant |  | 2,514 |  |  |  | (882 | ) |  |  | 1,632 |  |  |  | 3.2 |
Trademarks and trade names |  | 10,711 |  |  |  | (5,934 | ) |  |  | 4,777 |  |  |  | 9.1 |
Amortizable intangible assets |  | 165,858 |  |  |  | (112,616 | ) |  |  | 53,242 |  |  |  | 11.0 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  | 13,027 |  |  |  | — |  |  |  | 13,027 |  |  |  |  |
Total | $ | 178,885 |  |  | $ | (112,616 | ) |  | $ | 66,269 |  |  |  |  |
| December 31, 2014 |
| Gross Carrying Amount |  |  | Accumulated Amortization |  |  | Net Carrying Amount |  |  | Weighted Average Remaining Life (Years) |
Amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Patents and acquired technologies | $ | 78,253 |  |  | $ | (62,010 | ) |  | $ | 16,243 |  |  |  | 7.5 |
Customer relationships |  | 63,029 |  |  |  | (31,531 | ) |  |  | 31,498 |  |  |  | 14.7 |
Customer backlog |  | 1,810 |  |  |  | (1,641 | ) |  |  | 169 |  |  |  | 0.2 |
Non-compete covenant |  | 1,830 |  |  |  | (366 | ) |  |  | 1,464 |  |  |  | 4.2 |
Trademarks and trade names |  | 10,205 |  |  |  | (5,364 | ) |  |  | 4,841 |  |  |  | 9.8 |
Amortizable intangible assets |  | 155,127 |  |  |  | (100,912 | ) |  |  | 54,215 |  |  |  | 11.8 |
Non-amortizable intangible assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trade names |  | 13,027 |  |  |  | — |  |  |  | 13,027 |  |  |  |  |
Total | $ | 168,154 |  |  | $ | (100,912 | ) |  | $ | 67,242 |  |  |  |  |
Amortization Expense of Intangible Assets | Amortization expense is as follows (in thousands):
| Year Ended December 31, |
| 2015 |  |  | 2014 |  |  | 2013 |
Amortization expense – cost of revenue | $ | 4,712 |  |  | $ | 6,143 |  |  | $ | 5,280 |
Amortization expense – operating expenses |  | 7,611 |  |  |  | 10,262 |  |  |  | 7,270 |
Total amortization expense | $ | 12,323 |  |  | $ | 16,405 |  |  | $ | 12,550 |
Estimated Future Amortization Expense | Estimated future amortization expense for each of the five succeeding years and thereafter is as follows (in thousands):
Year Ending December 31, |  | Cost of Revenue |  |  | Operating Expenses |  |  | Total |
2016 |  | $ | 3,963 |  |  | $ | 7,498 |  |  | $ | 11,461 |
2017 |  |  | 3,600 |  |  |  | 6,898 |  |  |  | 10,498 |
2018 |  |  | 2,080 |  |  |  | 6,306 |  |  |  | 8,386 |
2019 |  |  | 1,768 |  |  |  | 4,324 |  |  |  | 6,092 |
2020 |  |  | 1,501 |  |  |  | 2,418 |  |  |  | 3,919 |
Thereafter |  |  | 3,612 |  |  |  | 9,274 |  |  |  | 12,886 |
Total |  | $ | 16,524 |  |  | $ | 36,718 |  |  | $ | 53,242 |
Results of Impairment Review | The results of the impairment review as of December 31, 2014 are summarized in the following table (in thousands):
|  | Pre-Impairment Net Carrying Value |  |  | Impairment Charge |  |  | Post-Impairment Net Carrying Value |
Goodwill |  | $ | 110,321 |  |  | $ | (19,575 | ) |  | $ | 90,746 |
Intangible assets |  |  | 89,109 |  |  |  | (21,867 | ) |  |  | 67,242 |
Total |  | $ | 199,430 |  |  | $ | (41,442 | ) |  | $ | 157,988 |

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