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Long-Term Debt - Summary of Long-Term Debt (Parenthetical) (Detail) | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2016 | Aug. 16, 2016 | Jan. 14, 2016
Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Fixed annual rate of interest | 8.00% |  |
Debt instrument, maturity date | Jan. 30, 2020 |  |
Convertible Senior Notes [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument stated interest rate | 3.875% |  |
Debt instrument, maturity date | Mar. 15, 2019 |  |
4% Promissory Note [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument stated interest rate | 4.00% |  | 4.00%
Debt instrument, maturity date | Feb. 01, 2031 |  |
3.75% Promissory Note [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Debt instrument stated interest rate | 3.75% | 3.75% |
Debt instrument, maturity date | Sep. 01, 2036 |  |

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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 Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + 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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- Details
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