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Summary of Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jun. 30, 2013 | Jun. 30, 2012
Supplemental Cash Flow Elements [Abstract] |  |
Interest | $ 7,660 | $ 7,764
Income taxes | 52,077 | 45,261
Other payable issued for purchased customer accounts | 257 | 23,594
Notes payable issued or assumed for purchased customer accounts |  | 59
Estimated acquisition earn-out payables and related charges | 2,554 | 12,919
Notes received on the sale of fixed assets and customer accounts | $ 614 | $ 1,273

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- Definition Obligations of a business that arise from the acquisition of merchandise, materials, supplies and services used in the production and/or sale of goods and services not classified as Trade Payables. + References No definition available. + Details
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- Definition The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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