Debt instrument convertible conversion price denomination value.

No definition available.

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- Definition

Debt Instrument, Convertible, Sale Price of Common Stock, Percentage

+ References

No definition available.

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- Definition

Debt Instrument, Interest Rate, Effective Percentage, Including Debt Issuance Costs

+ References

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- Definition

Line of Credit Facility, Additional Borrowing Capacity

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Line of Credit Facility, Foreign Subsidiaries Stock Pledged, Percentage

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No definition available.

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- Definition

The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations less the cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

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- Definition

Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.

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

+ References

No definition available.

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

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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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No definition available.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The cash outflow for a financial contract that meets the hedge criteria as either cash flow hedge, fair value hedge or hedge of net investment in foreign operations.

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The cash outflow to reacquire common and preferred stock.

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The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination.

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The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt).

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Debt - Additional Information (Detail)		1 Months Ended	12 Months Ended
Debt - Additional Information (Detail)	Jan. 02, 2019 USD ($)	Sep. 30, 2014 USD ($) $ / shares	Dec. 31, 2018 USD ($) day	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Nov. 30, 2018 USD ($) $ / shares	Dec. 31, 2014
Debt Instrument [Line Items]
Payments for repurchase of equity			$ 113,509,000	$ 101,844,000	$ 83,292,000
Debt discount			63,643,000	63,643,000
Liability component			118,688,000	$ 318,957,000
Aggregate amount paid for Note Hedges		$ 63,900,000
Proceeds from sale of warrants		$ 34,500,000
Liability component
Debt Instrument [Line Items]
Debt instrument, principal amount			150,000,000
Debt issuance costs			3,700,000
Liability component			118,688,000
Convertible Senior Notes Due 2023, Equity Component
Debt Instrument [Line Items]
Debt discount			28,045,000
Liability component			20,573,000
Deferred tax liability			6,619,000
Equity component, gross value
Debt Instrument [Line Items]
Liability component			$ 63,600,000
Convertible Senior Notes
Debt Instrument [Line Items]
Common stock strike price per share \| $ / shares		$ 68.86
Convertible Senior Notes \| Convertible Senior Notes Due 2023
Debt Instrument [Line Items]
Debt instrument						$ 150,000,000
Interest rate of debt, stated percentage			2.25%			2.25%
Net proceeds from issuance of debt			$ 145,400,000
Payments for repurchase of equity			$ 40,000,000
Conversion rate, number of share per $1,000 principal amount			28.0128
Initial conversion price \| $ / shares						$ 35.7
Conversion threshold minimum stock price as a percentage of conversion price			130.00%
Sale price of common stock, percentage			98.00%
Threshold trading days \| day			20
Threshold consecutive trading days \| day			30
Redemption price as a percentage			100.00%
Effective interest rate percentage						6.75%
Effective percentage, including debt issuance costs						7.36%
Deferred tax liability			$ 6,600,000
Convertible Senior Notes \| Liability component
Debt Instrument [Line Items]
Liability component			$ 122,000,000
Convertible Senior Notes \| Convertible Senior Notes Due 2019
Debt Instrument [Line Items]
Debt instrument		$ 345,000,000
Debt instrument, principal amount		345,000,000
Interest rate of debt, stated percentage			0.75%				0.75%
Net proceeds from issuance of debt		336,300,000
Net proceeds used to purchase Note Hedges		$ 29,400,000
Conversion rate, number of share per $1,000 principal amount		18.9667
Conversion rate, principal amount of Notes		$ 1,000	$ 1,000
Initial conversion price \| $ / shares		$ 52.72
Conversion threshold minimum stock price as a percentage of conversion price			130.00%
Threshold trading days \| day			20
Threshold consecutive trading days \| day			30
Redemption price as a percentage			100.00%
Effective interest rate percentage			4.98%
Effective percentage, including debt issuance costs			5.46%
Deferred tax liability			$ 23,700,000
Convertible Senior Notes \| Principal amount
Debt Instrument [Line Items]
Debt issuance costs			7,000,000
Convertible Senior Notes \| Liability Component Gross Value
Debt Instrument [Line Items]
Liability component			281,400,000
Convertible Senior Notes \| Equity component
Debt Instrument [Line Items]
Debt issuance costs			1,600,000
Convertible Senior Notes \| Convertible Senior Notes Due 2023, Equity Component
Debt Instrument [Line Items]
Debt issuance costs			$ 900,000
Subsequent Event \| Revolving Credit Facility
Debt Instrument [Line Items]
Debt Instrument, Term	5 years
Maximum borrowing capacity	$ 150,000,000
Additional borrowing capacity	$ 50,000,000
Foreign subsidiaries stock pledged	65.00%
Debt issuance costs	$ 800,000