Line Of Credit Facility Fronting Fee Percentage

No definition available.

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Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031898-161870

+ Details

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Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

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

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

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

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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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Period Type:	duration

- Definition

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

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-Publisher FASB
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-SubTopic 470
-Section 50
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Balance Type:	na
Period Type:	duration

- Definition

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

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

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.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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.

+ References

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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- Details

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- Details

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- Details

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Debt - Additional Information (Detail)		1 Months Ended	3 Months Ended				12 Months Ended
Debt - Additional Information (Detail)	Aug. 20, 2018 USD ($) $ / shares	Nov. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2019 USD ($) $ / shares	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Nov. 15, 2018 USD ($)
Debt Instrument [Line Items]
Conversion price (in dollars per share) \| $ / shares							$ 101.38
Loss on early extinguishment of debt			$ (9,072,000)	$ 0	$ 0	$ 0	$ 0	$ (9,072,000)	$ 0
Unamortized debt issue costs			6,681,000				5,248,000	6,681,000
Senior Notes \| Convertible Note Due 2023
Debt Instrument [Line Items]
Principal amount	$ 316,300,000
Interest rate (as a percent)	2.00%
Conversion rate	9.8643
Conversion price (in dollars per share) \| $ / shares	$ 101.38
Senior Notes \| 6% senior notes due 2022
Debt Instrument [Line Items]
Principal amount										$ 300,000,000.0
Interest rate (as a percent)										6.00%
Redemption premium								6,000,000.0
Write off of deferred debt issuance cost								3,100,000
Line of Credit
Debt Instrument [Line Items]
Borrowing limit used							1,000,000.0
Line of Credit \| Credit facility
Debt Instrument [Line Items]
Senior secured revolving line of credit							$ 550,000,000.0
Line of credit, maturity date							Jun. 26, 2020
Debt issuance costs		$ 1,700,000
Borrowings outstanding							$ 0
Unamortized debt issue costs			$ 3,600,000				$ 2,000,000.0	$ 3,600,000
Line of Credit \| Credit facility \| Minimum
Debt Instrument [Line Items]
Commitment fee (as a percent)							0.20%
Fronting fees (as a percent)							1.25%
Line of Credit \| Credit facility \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread (as a percent)		1.25%
Line of Credit \| Credit facility \| Minimum \| Base Rate
Debt Instrument [Line Items]
Basis spread (as a percent)		0.25%
Line of Credit \| Credit facility \| Maximum
Debt Instrument [Line Items]
Commitment fee (as a percent)							0.35%
Fronting fees (as a percent)							2.00%
Line of Credit \| Credit facility \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread (as a percent)		2.00%
Line of Credit \| Credit facility \| Maximum \| Base Rate
Debt Instrument [Line Items]
Basis spread (as a percent)		1.00%
Debt Instrument, Redemption, Period One \| Senior Notes \| Convertible Note Due 2023
Debt Instrument [Line Items]
Redemption price percentage							130.00%
Debt Instrument, Redemption, Period Two \| Senior Notes \| Convertible Note Due 2023
Debt Instrument [Line Items]
Redemption price percentage							98.00%