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PROPERTY AND EQUIPMENT, NET | 9 Months Ended
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Sep. 30, 2017
PROPERTY AND EQUIPMENT, NET. |
PROPERTY AND EQUIPMENT, NET | 5 PROPERTY AND EQUIPMENT, NET Property and equipment consisted of the following:
|  | As of December 31, 2016 |  | As of September 30, 2017 |
At cost: |  |  |  |  |  |  |
Buildings |  |  | 1,652,641 |  |  | 2,227,168 |
Data center equipment |  |  | 1,349,069 |  |  | 1,712,577 |
Leasehold improvement |  |  | 1,202,979 |  |  | 1,700,203 |
Furniture and office equipment |  |  | 31,270 |  |  | 35,331 |
Vehicles |  |  | 3,199 |  |  | 3,397 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 4,239,158 |  |  | 5,678,676 |
Less: Accumulated depreciation |  |  | (613,658 | ) |  | (857,006 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 3,625,500 |  |  | 4,821,670 |
Construction in progress |  |  | 697,391 |  |  | 1,547,160 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Property and equipment, net |  |  | 4,322,891 |  |  | 6,368,830 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(1) | The carrying amounts of the Company's property and equipment acquired under capital leases and other financing arrangement at the respective balance sheet dates were as follows:
|  | As of December 31, 2016 |  | As of September 30, 2017 |
At cost: |  |  |  |  |  |  |
Buildings (note) |  |  | 1,286,079 |  |  | 1,964,535 |
Data center equipment |  |  | 26,375 |  |  | 12,718 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 1,312,454 |  |  | 1,977,253 |
Less: Accumulated depreciation |  |  | (64,151 | ) |  | (114,827 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 1,248,303 |  |  | 1,862,426 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Note: | This item included those buildings under construction, of RMB313,721 and RMB419,177, respectively, as of December 31, 2016 and September 30, 2017.
(2) | Depreciation of property and equipment (including assets acquired under capital leases and other financing arrangement) was RMB146,016 and RMB244,898 for the nine-month periods ended September 30, 2016 and 2017, respectively, and included in the following captions:
|  | Nine-month periods ended September 30, |
|  | 2016 |  | 2017 |
Cost of revenue |  |  | 142,553 |  |  | 239,581 |
General and administrative expenses |  |  | 3,063 |  |  | 4,895 |
Research and development expenses |  |  | 400 |  |  | 422 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  |  | 146,016 |  |  | 244,898 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(3) | Interest costs that are directly attributable to the construction of an asset which necessarily takes a substantial period of time to get ready for its intended use or sale are capitalized as part of the cost of that asset. A reconciliation of total interest costs to "Interest expenses" as reported in the condensed consolidated statements of operations is as follows:
|  | Nine-month periods ended September 30, |
|  | 2016 |  | 2017 |
Total interest costs |  |  | 228,636 |  |  | 312,574 |
Less: interest costs capitalized |  |  | (47,300 | ) |  | (38,191 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Interest expenses |  |  | 181,336 |  |  | 274,383 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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- References No definition available. + Details
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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 -URI http://asc.fasb.org/topic&trid=2155823 + Details
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