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Fair Value Measurements (Balances Measured at Fair Value) (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
--- | --- | --- | --- | ---
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Available-for-sale securities, current portion | $ 400 | $ 400 |  |
Assets |  |  |  |
Cash and cash equivalents | 158,821 | 145,341 | $ 140,311 | $ 158,421
Restricted cash | 19,030 | 18,107 |  |
Investment available for sale | 17,400 | 18,000 |  |
Outstanding principal | 3,322,475 |  |  |
Fair Value, Measurements, Nonrecurring [Member] |  |  |  |
Assets |  |  |  |
Outstanding principal |  | 3,481,568 |  |
Fair Value, Measurements, Recurring |  |  |  |
Liabilities |  |  |  |
Contingent payments | 3,632 | 3,792 |  |
Assets |  |  |  |
Cash and cash equivalents | 158,821 | 145,341 |  |
Restricted cash | 19,030 | 18,107 |  |
Investment available for sale | 17,839 | 18,357 |  |
Merger earnout |  | 75 |  |
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Liabilities |  |  |  |
Contingent payments | 0 | 0 |  |
Assets |  |  |  |
Cash and cash equivalents |  | 145,341 |  |
Cash and cash equivalents | 158,821 |  |  |
Restricted cash |  | 18,107 |  |
Investment available for sale | 0 | 0 |  |
Merger earnout |  | 0 |  |
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 2 [Member] |  |  |  |
Liabilities |  |  |  |
Contingent payments | 0 | 0 |  |
Assets |  |  |  |
Cash and cash equivalents | 0 | 0 |  |
Restricted cash | 0 | 0 |  |
Investment available for sale | 0 | 0 |  |
Merger earnout |  | 0 |  |
Fair Value, Measurements, Recurring | Fair Value, Inputs, Level 3 [Member] |  |  |  |
Liabilities |  |  |  |
Contingent payments | 3,632 | 3,792 |  |
Assets |  |  |  |
Cash and cash equivalents | 0 | 0 |  |
Restricted cash | 0 | 0 |  |
Investment available for sale | 17,839 | 18,357 |  |
Merger earnout |  | 75 |  |
Parent Company [Member] |  |  |  |
Assets |  |  |  |
Cash and cash equivalents | 2 | 2 | $ 0 | $ 2,520
Outstanding principal | 2,309,725 | 2,389,165 |  |
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Debt instrument |  | 3,534,365 |  |
Estimate of Fair Value Measurement [Member] | Parent Company [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Debt instrument | 2,348,120 | 2,416,873 |  |
Holdco Note | Holdco Note | Parent Company [Member] |  |  |  |
Assets |  |  |  |
Outstanding principal |  | 151,740 |  |
Senior Notes | 9.00% senior notes due 2020 | Parent Company [Member] |  |  |  |
Assets |  |  |  |
Outstanding principal |  | 350,000 |  |
Senior Notes | 9.00% senior notes due 2020 | Parent Company [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Assets |  |  |  |
Outstanding principal | $ 350,000 |  |  |
Senior Notes | 9.00% senior notes due 2020 | Estimate of Fair Value Measurement [Member] | Parent Company [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Debt instrument |  | $ 359,625 |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + 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 210.5-02.22) -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 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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