Adjustments To Additional Paid In Capital, Equity Component Of Convertible Debt, Debt Issuance Costs

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- Definition

Adjustments To Debt Instrument Carrying Amount, Liability Component Of Convertible Debt, Debt Issuance Costs

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- Definition

Debt Instrument, Convertible, Threshold Business Days

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- Definition

The price per share of the conversion feature embedded in the debt instrument.

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- Definition

Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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Remaining amortization period for discount on the liability component of convertible debt which may be settled in cash upon conversion, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

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No definition available.

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- Definition

Threshold number of specified trading days that common stock price to conversion price of convertible debt instruments must exceed threshold percentage within a specified consecutive trading period to trigger conversion feature.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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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.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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- Definition

Fair value amount of debt instrument that was repurchased.

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Face (par) amount of the original debt instrument that was repurchased.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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- Definition

The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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- Definition

The cash inflow from the issuance of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder.

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Debt - Convertible Notes (Details)		3 Months Ended	6 Months Ended
Debt - Convertible Notes (Details)	Feb. 15, 2019 USD ($)	Jun. 30, 2017 USD ($) day $ / shares	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)	Feb. 28, 2014 USD ($)
Debt Instrument [Line Items]
Extinguishment of debt			$ 21,417,000	$ 0
Convertible Notes due 2022 \| Convertible Debt
Debt Instrument [Line Items]
Period of amortization of debt discount to interest expense using effective interest method		5 years	5 years
Aggregate principal amount of debt issued		$ 320,000,000.0
Proceeds from 2022 Convertible Notes		310,400,000
Payment of convertible debt issuance costs		9,600,000
Debt issuance costs		9,600,000
Debt issuance costs, allocated to equity component		2,200,000
Debt issuance costs allocated to the liability component		$ 7,400,000
Interest rate		3.25%
Debt conversion ratio		0.0365464
Initial conversion price of convertible notes into common stock (in usd per share) \| $ / shares		$ 27.36
Debt term		5 years
Effective interest rate on liability component			9.49%
Convertible Notes due 2019 \| Convertible Debt
Debt Instrument [Line Items]
Aggregate principal amount of debt issued						$ 200,000,000.0
Repurchase amount					$ 178,500,000
Repurchase price					$ 192,700,000
Extinguishment of debt	$ 21,400,000
Debt Instrument, Conversion, Period One \| Convertible Notes due 2022 \| Convertible Debt
Debt Instrument [Line Items]
Trading period \| day		20
Consecutive trading period \| day		30
Closing sales price of the entity's common stock that the conversion price must exceed or be equal in order for the notes to be convertible		130.00%
Debt Instrument, Conversion, Period Two \| Convertible Notes due 2022 \| Convertible Debt
Debt Instrument [Line Items]
Consecutive trading period \| day		5
Closing sales price of the entity's common stock that the conversion price must exceed or be equal in order for the notes to be convertible		98.00%
Consecutive business days after any five consecutive trading day period during the note measurement period \| day		5