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Supplemental Disclosures of Cash Flow Information and Non-Cash Financing and Investing Activities - Significant Non-Cash Investing and Financing Activities (Detail) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015
Cash paid during the period for: |  |
Interest | $ 18,770 | $ 18,766
Income taxes | 71,466 | 67,457
Significant non-cash investing and financing activities |  |
Other payable issued for purchased customer accounts | 10,500 | 905
Estimated acquisition earn-out payables and related charges | 2,393 | 27,134
Business Acquisition Cost of Entity Note Payable | 492 | 0
Notes received on the sale of fixed assets and customer accounts | $ 0 | $ 544

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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=66902209&loc=d3e3536-108585 + Details
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