v3.19.3

INDEBTEDNESS - Convertible Note Hedge and Warrant Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
May 25, 2018 | Mar. 06, 2017 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |  |  |
Proceeds from issuance of warrants |  |  | $ 0 | $ 112,125 |
Convertible Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Conversion price of convertible debt (in USD per share) | $ 77.85 | $ 22.95 |  |  |
Conversion price of convertible debt after effect of warrants and note hedge (in USD per share) | $ 109.26 | $ 31.18 |  |  |
Common Stock Warrant |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Warrants to purchase aggregate shares of capital stock (in shares) | 11.1 | 19.2 |  |  |
Warrants, weighted average exercise price (in USD per share) | $ 109.26 | $ 31.18 |  |  |
Proceeds from issuance of warrants | $ 112,100 | $ 57,200 |  |  |
Shares of common stock received due to exercise of note hedges (in shares) |  |  | 0.3 |  | 6.9
Options |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Warrants to purchase aggregate shares of capital stock (in shares) | 11.1 | 19.2 |  |  |
Convertible note hedge, option to purchase common stock, price (in USD per share) | $ 77.85 | $ 22.95 |  |  |
Cost of convertible note hedge | $ 172,600 | $ 92,100 |  |  |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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