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Fair Value Measurements (Tables) | 3 Months Ended
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Mar. 31, 2018
Fair Value Disclosures [Abstract] |
Fair Value, Assets Measured on Recurring Basis | Balances Measured at Fair Value The following tables show the fair values of certain of our financial instruments:
| March 31, 2018
(In thousands) | Balance |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |
Cash and cash equivalents | $ | 179,706 |  |  | $ | 179,706 |  |  | $ | — |  |  | $ | — |
Restricted cash | 25,794 |  |  | 25,794 |  |  | — |  |  | — |
Investment available for sale | 16,454 |  |  | — |  |  | — |  |  | 16,454 |
Liabilities |  |  |  |  |  |  |
Contingent payments | $ | 2,813 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,813 |
| December 31, 2017
(In thousands) | Balance |  | Level 1 |  | Level 2 |  | Level 3
Assets |  |  |  |  |  |  |
Cash and cash equivalents | $ | 203,104 |  |  | $ | 203,104 |  |  | $ | — |  |  | $ | — |
Restricted cash | 24,175 |  |  | 24,175 |  |  | — |  |  | — |
Investment available for sale | 17,752 |  |  | — |  |  | — |  |  | 17,752 |
Liabilities |  |  |  |  |  |  |
Contingent payments | $ | 2,887 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,887 |
Fair Value, Assets and Liabilities Measured on Recurring Basis | The following tables summarize the changes in fair value of the Company's Level 3 assets and liabilities:
| Three Months Ended
| March 31, 2018 |  | March 31, 2017
| Assets |  | Liability |  | Assets |  | Liability
(In thousands) | Investment Available for Sale |  | Contingent Payments |  | Investment Available for Sale |  | Contingent Payments
Balance at beginning of reporting period | $ | 17,752 |  |  | $ | (2,887 | ) |  | $ | 17,259 |  |  | $ | (3,038 | )
Total gains (losses) (realized or unrealized): |  |  |  |  |  |  |
Included in interest income (expense) | 36 |  |  | (62 | ) |  | 35 |  |  | (129 | )
Included in other comprehensive income (loss) | (1,334 | ) |  | — |  |  | 571 |  |  | — |
Included in other items, net | — |  |  | (82 | ) |  | — |  |  | (391 | )
Purchases, sales, issuances and settlements: |  |  |  |  |  |  |
Settlements | — |  |  | 218 |  |  | — |  |  | 210 |
Balance at end of reporting period | $ | 16,454 |  |  | $ | (2,813 | ) |  | $ | 17,865 |  |  | $ | (3,348 | )
We are exposed to valuation risk on our Level 3 financial instruments. We estimate our risk exposure using a sensitivity analysis of potential changes in the significant unobservable inputs of our fair value measurements. Our Level 3 financial instruments are most susceptible to valuation risk caused by changes in the discount rate. If the discount in our fair value measurements increased or decreased by 100 basis points, the change would not cause the value of our fair value measurements to change significantly.
Fair Value, Liabilities Measured on Recurring and Nonrecurring Basis | The following tables provide the fair value measurement information about our long-term debt:
| March 31, 2018
(In thousands) | Outstanding Face Amount |  | Carrying Value |  | Estimated Fair Value |  | Fair Value Hierarchy
Bank credit facility | $ | 1,536,251 |  |  | $ | 1,512,309 |  |  | $ | 1,543,774 |  |  | Level 2
6.875% senior notes due 2023 | 750,000 |  |  | 740,983 |  |  | 791,250 |  |  | Level 1
6.375% senior notes due 2026 | 750,000 |  |  | 739,458 |  |  | 780,000 |  |  | Level 1
Other | 454 |  |  | 454 |  |  | 454 |  |  | Level 3
Total debt | $ | 3,036,705 |  |  | $ | 2,993,204 |  |  | $ | 3,115,478 |  |  |
| December 31, 2017
(In thousands) | Outstanding Face Amount |  | Carrying Value |  | Estimated Fair Value |  | Fair Value Hierarchy
Bank credit facility | $ | 1,621,054 |  |  | $ | 1,595,703 |  |  | $ | 1,625,178 |  |  | Level 2
6.875% senior notes due 2023 | 750,000 |  |  | 740,545 |  |  | 798,750 |  |  | Level 1
6.375% senior notes due 2026 | 750,000 |  |  | 739,128 |  |  | 810,000 |  |  | Level 1
Other | 504 |  |  | 504 |  |  | 504 |  |  | Level 3
Total debt | $ | 3,121,558 |  |  | $ | 3,075,880 |  |  | $ | 3,234,432 |  |  |
Balances Disclosed at Fair Value The following tables provide the fair value measurement information about our obligation under minimum assessment agreements and other financial instruments:
| March 31, 2018
(In thousands) | Outstanding Face Amount |  | Carrying Value |  | Estimated Fair Value |  | Fair Value Hierarchy
Liabilities |  |  |  |  |  |  |
Obligation under assessment arrangements | $ | 31,232 |  |  | $ | 25,271 |  |  | $ | 30,729 |  |  | Level 3
| December 31, 2017
(In thousands) | Outstanding Face Amount |  | Carrying Value |  | Estimated Fair Value |  | Fair Value Hierarchy
Liabilities |  |  |  |  |  |  |
Obligation under assessment arrangements | $ | 31,729 |  |  | $ | 25,602 |  |  | $ | 26,999 |  |  | Level 3

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + 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 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: 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 + Details
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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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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: 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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