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FIXED ASSETS | 12 Months Ended
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Dec. 31, 2012
FIXED ASSETS |
FIXED ASSETS | 5. FIXED ASSETS As of December 31, 2011 and 2012, property, plant and equipment consist of the following (in thousands):
|  | Useful Life (in Years) |  | 2011 |  | 2012 |
--- | --- | --- | --- | --- | --- | --- | ---
Telecommunications equipment and towers |  |  | 5 - 15 |  | $ | 666,969 |  | $ | 697,340 |
Office and computer equipment |  |  | 3 - 10 |  |  | 47,063 |  |  | 53,579 |
Buildings |  |  | 15 - 39 |  |  | 18,017 |  |  | 29,619 |
Transportation vehicles |  |  | 3 - 10 |  |  | 7,679 |  |  | 8,610 |
Leasehold improvements |  |  | Shorter of useful life or lease term |  |  | 20,515 |  |  | 19,876 |
Land |  |  | — |  |  | 6,653 |  |  | 6,836 |
Furniture and fixtures |  |  | 5 - 10 |  |  | 8,120 |  |  | 11,090 |
Total plant in service |  |  |  |  |  | 775,016 |  |  | 826,950 |
Construction in progress |  |  |  |  |  | 38,375 |  |  | 42,394 |
Total property, plant, and equipment |  |  |  |  |  | 813,391 |  |  | 869,344 |
Less: Accumulated depreciation |  |  |  |  |  | (330,188 | ) |  | (418,797 | )
Net fixed assets |  |  |  |  | $ | 483,203 |  | $ | 450,547 |
Depreciation and amortization of fixed assets using the straight-line method over the assets' estimated useful life for the years ended December 31, 2010, 2011 and 2012 was $68.5 million, $93.6 million and $96.5 million, respectively. For the years ended December 31, 2010, 2011 and 2012, amounts of capital expenditures were offset by grants of $1.6 million, $11.8 million and $30.6 million, respectively. During the year ended December 31, 2012, the Company sold certain network assets used in its wholesale U.S. Wireless business. The Company recorded a gain on this transaction, calculated as follows:
|  |  |  | (in thousands) |
--- | --- | --- | --- | --- | ---
Sales proceeds |  |  |  |  | $ | 15,629 |
Less net book value of assets sold: |  |  |  |  |  |  |
Property, plant and equipment, cost |  |  | 12,279 |  |  |  |
Accumulated depreciation |  |  | (8,263 | ) |  |  |
Property, plant and equipment, net book value |  |  |  |  |  | 4,016 |
Other |  |  |  |  |  | 8 |
Total net book value of assets sold |  |  |  |  |  | 4,024 |
Gain on disposition of long-lived assets |  |  |  |  |  | 11,605 |

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- Definition The entire disclosure for long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. This disclosure may include property plant and equipment accounting policies and methodology, a schedule of property, plant and equipment gross, additions, deletions, transfers and other changes, depreciation, depletion and amortization expense, net, accumulated depreciation, depletion and amortization expense and useful lives, 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 205 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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 Reference 5: 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 + Details
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