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Long-Term Debt - Long-term Debt (Parenthetical) (Detail) | Jun. 30, 2018
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10% Senior Secured Toggle Notes due 2020 |
Debt Instrument [Line Items] |
Interest rate on debt instrument | 10.00%
7¾% Convertible Second Lien PIK Notes due 2019 |
Debt Instrument [Line Items] |
Interest rate on debt instrument | 7.75%
9½% Convertible Second Lien PIK Notes due 2020 |
Debt Instrument [Line Items] |
Interest rate on debt instrument | 9.50%
10% Senior Notes due 2020 |
Debt Instrument [Line Items] |
Interest rate on debt instrument | 10.00%
7¾% Senior Notes due 2019 |
Debt Instrument [Line Items] |
Interest rate on debt instrument | 7.75%
9½% Senior Notes due 2020 |
Debt Instrument [Line Items] |
Interest rate on debt instrument | 9.50%

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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