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v3.5.0.2

Debt - Additional Information (Detail) |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 13, 2016 USD ($) shares $ / shares | Jun. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Mar. 15, 2016 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Payment of capped call transactions |  |  | $ 27,300,000 | $ 0 |
Interest expense, debt |  | $ 4,500,000 | $ 5,200,000 |  |
Convertible Senior Notes Due 2021 Issued March 2016 | Convertible Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Convertible senior notes, principal amount |  |  |  |  | $ 190,000,000
Convertible Senior Notes Due 2021 Issued April 2016 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Convertible senior notes, principal amount | $ 23,500,000 |  |  |  |
Convertible Senior Notes Due 2021 | Convertible Senior Notes |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Convertible senior notes, principal amount | $ 213,500,000 |  |  |  |
Convertible senior notes interest rate | 5.50% |  |  |  |
Effective interest rate | 9.50% |  |  |  |
Conversion rate for the notes | 0.1024249 |  |  |  |
Convertible shares total | shares | 21,867,716 |  |  |  |
Initial conversion price (dollars per share) | $ / shares | $ 9.76 |  |  |  |
Payment of capped call transactions | $ 27,300,000 |  |  |  |
Debt discount | $ 33,600,000 |  |  |  |

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- Definition The price per share of the conversion feature embedded in the debt instrument. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928298&loc=SL6031898-161870 + Details
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- Definition Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Conversion Rate -URI http://asc.fasb.org/extlink&oid=6509012 Reference 3: 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)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 + Details
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- Definition The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity. + 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)(5)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21521-112644 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + 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 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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