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Emergence From Voluntary Reorganization Under Chapter 11 Proceedings (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Class of Stock [Line Items] |  |  |  |  |  |
Total Stock, Shares Authorized | 120,000,000 |  | 120,000,000 |  |  |
Preferred Stock, Shares Authorized | 20,000,000 |  | 20,000,000 | 20,000,000 | 20,000,000 |
Common Stock, Shares Authorized |  |  |  | 100,000,000 | 100,000,000 |
Common Stock, Shares, Issued | 9,000,000 |  | 9,000,000 | 9,000,000 | 9,000,000 |
Long-term debt | $ 240,400 |  | $ 240,400 | $ 247,600 | $ 240,400 |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% |  | 8.00% | 8.00% |  |
Convertible senior notes | $ 530,000 |  | $ 530,000 |  |  |
Convertible Noteholders, Percent of New Common Stock | 79.04% |  | 79.04% |  |  |
Interest Paid |  | $ 12,000 | $ 15,900 |  |  |
Convertible Noteholders, New Notes | $ 200,000 |  | $ 200,000 |  |  |
Preferred Stock, Shares Outstanding |  |  |  |  |  | 85,903
Convertible preferred stock (Predecessor), 85,900 shares issued |  |  |  |  |  | $ 113,900
Class of Warrant or Right, Outstanding |  |  |  |  |  | 250,000
Preferred Investors, Each, Percent of New Common Stock | 7.98% |  | 7.98% |  |  |
Preferred Investors, Aggregate, Percent of New Common Stock | 15.96% |  | 15.96% |  |  |
Preferred Investors, Each, New Notes | $ 20,190 |  | $ 20,190 |  |  |
Government Funding Condition for Preferred Investor Investment | 1,500,000 |  | 1,500,000 |  |  |
Preferred Investors, Aggregate, New Notes | $ 40,380 |  | $ 40,380 |  |  |
Stockholders, Percent of New Common Stock | 5.00% |  | 5.00% |  |  |
Secured Intercompany Financing | $ 48,000 |  | $ 48,000 |  |  |
Funds for Payments under Reorganization Plan | 35,300 |  | 35,300 |  |  |
Funds for Working Capital under Reorganization Plan | 12,700 |  | $ 12,700 |  |  |
Debtor in Possession Financing Repayments | 16,300 |  |  |  |  |
Professional Fees | $ 3,100 |  |  |  |  |
Common Class A [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Common Stock, Shares Authorized | 70,000,000 |  | 70,000,000 | 70,000,000 |  |
Common Stock, Shares, Issued |  |  |  | 7,563,600 |  |
Common Class B [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Common Stock, Shares Authorized | 30,000,000 |  | 30,000,000 | 30,000,000 |  |
Common Stock, Shares, Issued |  |  |  | 1,436,400 |  |

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