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Property and Equipment | 12 Months Ended
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Dec. 31, 2013
Property and Equipment [Abstract] |
Property and Equipment | Property and Equipment Property and equipment at December 31, 2013 and 2012 are as follows:
| Estimated Useful Lives |  | As of December 31,
| In Years |  | 2013 |  | 2012
|  |  |  |  | (in thousands)
Computers and software | 3-5 |  | $ | 11,180 |  |  | $ | 11,042 |
Furniture and fixtures | 5-7 |  | 7,315 |  |  | 7,343 |
Laboratory equipment | 3-7 |  | 34,952 |  |  | 36,065 |
Leasehold improvements | 7-10 |  | 8,092 |  |  | 9,991 |
Buildings | 15-40 |  | 59,104 |  |  | 58,945 |
Land |  | — |  |  |  | 2,664 |  |  | 2,664 |
Total property and equipment |  |  |  |  | 123,307 |  |  | 126,050 |
Less: Accumulated depreciation and amortization |  |  |  |  | (81,945 | ) |  | (83,416 | )
Net property and equipment |  |  |  |  | $ | 41,362 |  |  | $ | 42,634 |
During the year ended December 31, 2011, the Company determined that one of its buildings was impaired and therefore recorded an impairment loss of $800,000, which was recorded as research and development expense in the accompanying statement of comprehensive loss. The fair value of the impaired building was estimated using sales prices in similar real estate sales and offers received from potential purchasers of the building. In June 2011, the Company sold this building with an immaterial additional loss on the 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 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: 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=6391110&loc=d3e2921-110230 Reference 3: 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=6360339&loc=d3e1361-107760 Reference 4: 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 + Details
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