Debt - Exchange Offer (Detail) - USD ($)
$ / shares in Units, $ in Millions |
|
9 Months Ended |
|
|
|
|
Apr. 15, 2016 |
Sep. 30, 2016 |
May 20, 2016 |
May 19, 2016 |
Mar. 11, 2016 |
Dec. 31, 2015 |
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Common stock, par value (in USD per share) |
|
$ 0.001
|
|
|
|
|
| Common stock, shares authorized |
|
|
350,000,000
|
50,000,000
|
|
|
| Stock issued during period |
|
101,071,875
|
|
|
|
|
| Interest Rate |
|
4.32%
|
|
|
|
|
| Chief Executive Officer |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Stock issued during period |
|
98,234,375
|
|
|
|
|
| Common Class A |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Percent of securities called by warrants or rights, percent |
10.00%
|
|
|
|
|
|
| Note Holders |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Stock issued during period |
|
2,837,500
|
|
|
|
|
| 2018 Notes |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt amendment, percent of debt subject to restructuring (more than) |
|
|
|
|
80.00%
|
|
| Interest Rate |
|
9.875%
|
|
|
|
9.875%
|
| Face amount |
$ 40.4
|
|
|
|
|
|
| Interest expense |
2.0
|
|
|
|
|
|
| 2018 Notes | 2018 Notes Converted Into 2021 Notes |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt conversion, amount converted |
327.2
|
|
|
|
|
|
| 2018 Notes | Chief Executive Officer |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Notes payable, related parties, noncurrent |
|
$ 31.4
|
|
|
|
|
| 2018 Notes | Common Class A | 2018 Notes Converted Into Common Stock |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt conversion, amount converted |
32.3
|
|
|
|
|
|
| 2018 Notes | Note Holders | Common Class A | 2018 Notes Converted Into Common Stock |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt conversion, amount converted |
$ 0.9
|
|
|
|
|
|
| Notes 2021 |
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Debt instrument, convertible, conversion price (in usd per share) |
$ 0.32
|
|
|
|
|
|
| Interest Rate |
|
12.50%
|
|
|
|
12.50%
|
| Debt instrument, interest rate, stated percentage, period two |
|
10.00%
|
|
|
|
|
| Interest paid in-kind, paid in year two |
|
50.00%
|
|
|
|
|
| Interest paid in cash, paid in year two |
|
50.00%
|
|
|
|
|
| Interest paid in cash, paid in year 3 |
|
10.00%
|
|
|
|
|
| Increase (decrease) in interest payment obligation, remainder of the year |
$ 17.8
|
|
|
|
|
|
| Increase (decrease) in interest payment obligation, payable in year two |
17.9
|
|
|
|
|
|
| Increase (decrease) in interest payment obligation, payable in year three |
$ 8.6
|
|
|
|
|
|