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Property and Equipment | 12 Months Ended
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Dec. 31, 2015
Property and Equipment [Abstract] |
Property and Equipment | Property and Equipment Property and equipment at December 31, 2015 and 2014 are as follows:
| Estimated Useful Lives |  | As of December 31,
| In Years |  | 2015 |  | 2014
|  |  |  |  | (in thousands)
Computers and software | 3-5 |  | $ | 8,457 |  |  | $ | 9,468 |
Furniture and fixtures | 5-7 |  | 6,269 |  |  | 7,032 |
Laboratory equipment | 3-7 |  | 3,908 |  |  | 12,737 |
Leasehold improvements | 7-10 |  | 240 |  |  | 8,117 |
Buildings | 15-40 |  | 59,117 |  |  | — |
Land |  | — |  |  |  | 2,664 |  |  | — |
Total property and equipment |  |  |  |  | 80,655 |  |  | 37,354 |
Less: Accumulated depreciation and amortization |  |  |  |  | (59,428 | ) |  | (36,274 | )
Net property and equipment |  |  |  |  | $ | 21,227 |  |  | $ | 1,080 |
Buildings of $59.1 million and land of $2.7 million, as well as $38.0 million of related accumulated depreciation, have been reclassified to assets held for sale as of December 31, 2014. In 2015, these assets were reclassified to assets held and used, and are therefore disclosed as property and equipment as of December 31, 2015 (see Note 6, Buildings and Land for Sale).

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- Definition The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13-14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51717284&loc=d3e1361-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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