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Guarantor Subsidiaries Financial Information Additional Information (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Cash and Cash Equivalents | $ 61,266 | $ 60,475 | $ 426,646 | $ 72,574
Long-term Debt | 2,622,358 | 2,724,672 |  |
Accounts and Notes Receivable: |  |  |  |
Trade | 215,329 | 220,222 |  |
Inventories | $ 69,618 | 65,461 |  |
Senior Notes 8 Percent Due April 2017 Par Value [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.25% |  |  |
Senior notes due April 2020 at 8.25% |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.375% |  |  |
Long-term Debt | $ 74,470 | 74,470 |  |
Senior Secured Notes Due March 2021 Par Value [Member] [Member] [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Long-term Debt | $ 1,754,310 | 1,854,731 |  |
Senior notes due March 2021 at 6.375% |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.875% |  |  |
Long-term Debt | $ 20,611 | 20,611 |  |
Senior Notes due April 2023 at 8.0% [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Long-term Debt | $ 494,570 | $ 494,344 |  |
Senior Notes 8 Percent Due April 2023 Par Value [Member] [Member] |  |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% |  |  |

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3-4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a(1) -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 + Details
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