Long-lived intangible assets and other assets consisted of the following: | | | | | | | | | | | | | | | | | | | | | | | | | | Dollars in Thousands | | December 31, 2012 | | December 31, 2011 | | Cost | | Accumulated Amortization | | Net Book Value | | Cost | | Accumulated Amortization | | Net Book Value | Acquired technology | $ | 9,009 |
| | $ | 1,910 |
| | $ | 7,099 |
| | $ | 6,535 |
| | $ | 911 |
| | $ | 5,624 |
| Assay royalties | 1,434 |
| | 410 |
| | 1,024 |
| | 1,434 |
| | 205 |
| | 1,229 |
| Third party payor relationships | 367 |
| | 49 |
| | 318 |
| | 367 |
| | — |
| | 367 |
| Tradenames and trademarks | 824 |
| | 115 |
| | 709 |
| | 344 |
| | 49 |
| | 295 |
| Customer relationships | 652 |
| | 11 |
| | 641 |
| | — |
| | — |
| | — |
| Covenants not to compete | 184 |
| | 15 |
| | 169 |
| | — |
| | — |
| | — |
| Patents | 929 |
| | 280 |
| | 649 |
| | 703 |
| | 267 |
| | 436 |
| Intellectual property | 170 |
| | 15 |
| | 155 |
| | 20 |
| | 5 |
| | 15 |
| | $ | 13,569 |
| | $ | 2,805 |
| | $ | 10,764 |
| | $ | 9,403 |
| | $ | 1,437 |
| | $ | 7,966 |
|
| | | | | | 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 |
|