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Goodwill and Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Other intangible assets | Other intangible assets at March 31, 2014 and December 31, 2013, consisted of the following (in thousands):
| March 31, 2014
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Patents | $ | 9,702 |  |  | $ | (2,430 | ) |  | $ | 7,272 |
Distribution agreements | 5,176 |  |  | (1,900 | ) |  | 3,276 |
License agreements | 3,783 |  |  | (1,360 | ) |  | 2,423 |
Trademarks | 7,622 |  |  | (1,968 | ) |  | 5,654 |
Covenants not to compete | 1,029 |  |  | (458 | ) |  | 571 |
Customer lists | 20,626 |  |  | (11,555 | ) |  | 9,071 |
Royalty agreements | 267 |  |  | (267 | ) |  | — |
Total | $ | 48,205 |  |  | $ | (19,938 | ) |  | $ | 28,267 |
| December 31, 2013
| Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Patents | $ | 9,302 |  |  | $ | (2,374 | ) |  | $ | 6,928 |
Distribution agreements | 5,176 |  |  | (1,780 | ) |  | 3,396 |
License agreements | 3,783 |  |  | (1,249 | ) |  | 2,534 |
Trademarks | 7,622 |  |  | (1,844 | ) |  | 5,778 |
Covenants not to compete | 1,029 |  |  | (399 | ) |  | 630 |
Customer lists | 20,626 |  |  | (10,957 | ) |  | 9,669 |
Royalty agreements | 267 |  |  | (267 | ) |  | — |
Total | $ | 47,805 |  |  | $ | (18,870 | ) |  | $ | 28,935 |
Estimated amortization expense | Estimated amortization expense for the intangible assets for the next five years consists of the following as of March 31, 2014 (in thousands):
Year Ending December 31 |
Remaining 2014 | $ | 11,423 |
2015 | 14,796 |
2016 | 14,061 |
2017 | 13,677 |
2018 | 13,140 |

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- Definition Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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