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INTANGIBLES AND OTHER ASSETS | 3 Months Ended
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Mar. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract] |
Intangibles And Other Assets | INTANGIBLES AND OTHER ASSETS Long-lived intangible assets and other assets consisted of the following:
| Dollars in Thousands
| March 31, 2013 |  | December 31, 2012
| Cost |  | Accumulated Amortization |  | Net Book Value |  | Cost |  | Accumulated Amortization |  | Net Book Value
Intangibles—acquired technology | $ | 9,009 |  |  | $ | 2,226 |  |  | $ | 6,783 |  |  | $ | 9,009 |  |  | $ | 1,910 |  |  | $ | 7,099 |
Intangibles—assay royalties | 1,434 |  |  | 461 |  |  | 973 |  |  | 1,434 |  |  | 410 |  |  | 1,024 |
Intangibles—third party payor relationships | 367 |  |  | 55 |  |  | 312 |  |  | 367 |  |  | 49 |  |  | 318 |
Intangibles—tradenames and trademarks | 824 |  |  | 145 |  |  | 679 |  |  | 824 |  |  | 115 |  |  | 709 |
Intangibles—customer relationships | 652 |  |  | 22 |  |  | 630 |  |  | 652 |  |  | 11 |  |  | 641 |
Intangibles—covenants not to compete | 184 |  |  | 31 |  |  | 153 |  |  | 184 |  |  | 15 |  |  | 169 |
Patents | 975 |  |  | 293 |  |  | 682 |  |  | 929 |  |  | 280 |  |  | 649 |
Intellectual property | 170 |  |  | 20 |  |  | 150 |  |  | 170 |  |  | 15 |  |  | 155 |
| $ | 13,615 |  |  | $ | 3,253 |  |  | $ | 10,362 |  |  | $ | 13,569 |  |  | $ | 2,805 |  |  | $ | 10,764 |
| Estimated Useful Life
Acquired technology | 7-8 years
Assay royalties | 7 years
Third party payor relationships | 15 years
Tradenames and trademarks | 7 years
Customer relationships | 15 years
Covenants not to compete | 3 years
Patents | Life of the patent
Intellectual property | 7 years
Other assets include U.S. security deposits and deferred tax assets, net of applicable valuation allowances. Amortization expense for intangible assets was $0.5 million and $0.3 million during the three months ended March 31, 2013 and 2012, respectively. Amortization expense for intangible assets is expected to be $1.7 million in each of the years 2013 through 2017.

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