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Selling, General and Administrative Expenses (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Component of Operating Other Cost and Expense [Abstract] |  |  |  |
Selling, general and administrative expenses | $ 117,005 | $ 118,536 | $ 348,632 | $ 337,794
Personnel expenses |  |  |  |
Component of Operating Other Cost and Expense [Abstract] |  |  |  |
Selling, general and administrative expenses | 83,580 | 80,421 | 251,379 | 230,917
Operational expenses |  |  |  |
Component of Operating Other Cost and Expense [Abstract] |  |  |  |
Selling, general and administrative expenses | 31,318 | 35,916 | 90,865 | 100,318
Depreciation and amortization |  |  |  |
Component of Operating Other Cost and Expense [Abstract] |  |  |  |
Selling, general and administrative expenses | $ 2,107 | $ 2,199 | $ 6,388 | $ 6,559

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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6386349&loc=d3e3636-108311 + Details
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