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v3.6.0.2

Long-term Debt - Long-term Debt (Parenthetical) (Detail) | Dec. 31, 2016 | Dec. 31, 2015
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10 % Senior Secured Toggle Notes due 2020 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument | 10.00% | 10.00%
7 3/4% Senior Notes due 2019 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument | 7.75% | 7.75%
7 3/4% Convertible Second Lien PIK Notes due 2019 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument | 7.75% | 7.75%
9 1/2% Senior Notes due 2020 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument | 9.50% | 9.50%
9½ % Convertible Second Lien PIK Notes due 2020 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument | 9.50% | 9.50%
10 % Senior Secured Notes due 2020 |  |
Debt Instrument [Line Items] |  |
Interest rate on debt instrument | 10.00% | 10.00%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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