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Debt - Debt (Detail) | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2013 | Nov. 27, 2013 | Feb. 26, 2013
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Convertible Debt |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Average interest rate | 3.75% | 3.75% |  |  |
Variable and fixed interest rates ranging, minimum | 3.75% |  | 3.75% |  | 3.75%
6% Tangible Equity Units |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Average interest rate | 6.00% | 6.00% |  |  |
Secured Promissory Notes |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Average interest rate |  | 3.42% |  |  |
Senior Secured Credit Facility | Revolving Credit Facility |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Average interest rate | 8.50% | 8.50% |  |  |
6% Tangible Equity Units |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable and fixed interest rates ranging, minimum |  |  | 6.00% | 6.00% |
Minimum | Other Indebtedness |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable and fixed interest rates ranging, minimum | 5.00% |  |  |  |
Maximum | Other Indebtedness |  |  |  |  |
Line of Credit Facility [Line Items] |  |  |  |  |
Variable and fixed interest rates ranging, minimum | 5.50% |  |  |  |

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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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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Weighted average interest rate of long-term debt outstanding. + References No definition available. + Details
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