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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2016
Fair Value, Inputs, Level 1 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis | The following tables present certain information for our financial assets that is measured at fair value on a recurring basis at December 31:
| Level 1 2016 |  | Level 1 2015
| Carrying Amount |  | Fair Value |  | Carrying Amount |  | Fair Value
Liabilities: |  |  |  |  |  |  |  |  |  |  |
6.50% Senior Notes due 2024 | 900,000 |  |  | 812,250 |  |  | — |  |  | — |
6.75% Senior Notes due 2020 | — |  |  | — |  |  | 740,838 |  |  | 765,319 |
Fair Value, Inputs, Level 3 |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis | The following table presents changes in deferred acquisition consideration for the years ended December 31:
| Fair Value Measurements Using Significant Unobservable Inputs (Level 3)
| 2016 |  | 2015
Beginning balance of contingent payments | $ | 306,734 |  |  | $ | 172,227 |
Payments (1) | (105,169 | ) |  | (77,301 | )
Additions (2) | 16,132 |  |  | 174,530 |
Redemption value adjustments (3) | 13,930 |  |  | 41,636 |
Other (4) | (6,412 | ) |  | — |
Foreign translation adjustment | (461 | ) |  | (4,358 | )
Ending balance of contingent payments | $ | 224,754 |  |  | $ | 306,734 |

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- Definition Tabular disclosure of liabilities measured at fair value measured on a recurring or nonrecurring basis. Includes, but is not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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