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Depreciation and Amortization - Depreciation and Amortization Expense Excluded from Operating Expenses (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Component Of Other Income And Expense [Line Items] |  |  |
Depreciation and amortization | $ 300,579 | $ 296,083 | $ 299,639
Direct advertising expenses [Member] |  |  |
Component Of Other Income And Expense [Line Items] |  |  |
Depreciation and amortization | 283,280 | 277,662 | 283,720
General and administrative expenses [Member] |  |  |
Component Of Other Income And Expense [Line Items] |  |  |
Depreciation and amortization | 4,684 | 4,137 | 4,224
Corporate expenses [Member] |  |  |
Component Of Other Income And Expense [Line Items] |  |  |
Depreciation and amortization | $ 12,615 | $ 14,284 | $ 11,695

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- Definition The aggregate net amount of depreciation, amortization, and accretion recognized during an accounting period. As a noncash item, the net amount is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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