Credit Facility Basis Point

No definition available.

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- Definition

Debt Instrument Business Days

+ References

No definition available.

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- Definition

Debt Instrument, Exceeded Principal Amount

+ References

No definition available.

+ Details

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- Definition

Fundamental Change Repurchase Price Percentage

+ References

No definition available.

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- Definition

Line Of Credit Facility Fronting Fee Percentage

+ References

No definition available.

+ Details

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- 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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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

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- Definition

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

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+ Details

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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.

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Balance Type:	na
Period Type:	duration

- 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.

+ Details

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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.

+ Details

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- 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

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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.

+ References

No definition available.

+ Details

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- Definition

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

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- 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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Balance Type:	debit
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- 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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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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Balance Type:	credit
Period Type:	instant

- 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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- 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

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- Details

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- Details

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Debt - Additional Information (Details)		1 Months Ended	12 Months Ended
Debt - Additional Information (Details)	Aug. 20, 2018 USD ($) $ / shares	Nov. 30, 2018 USD ($)	Dec. 31, 2021 USD ($) segment business_day trading_day $ / shares	Dec. 31, 2020 USD ($) $ / shares	Dec. 31, 2019 $ / shares	Jun. 26, 2015 USD ($)
Debt Instrument [Line Items]
Conversion price (in dollars per share) \| $ / shares			$ 101.38	$ 101.38	$ 101.38
Unamortized debt issue costs			$ 2,363,000	$ 3,809,000
Aggregate principal amount			316,245,000	316,250,000
Federal Funds
Debt Instrument [Line Items]
Credit facility basis point (as a percent)		5000.00%
London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Credit facility basis point (as a percent)		10000.00%
Line of Credit
Debt Instrument [Line Items]
Borrowing limit used			400,000
Convertible Note Due 2023
Debt Instrument [Line Items]
Principal amount			1,000
Exceeded principal amount			$ 162,400,000
Fundamental change repurchase price percent (as a percent)			100.00%
Aggregate principal amount			$ 316,245,000	316,250,000
Convertible Note Due 2023 \| Senior Notes
Debt Instrument [Line Items]
Principal amount	$ 316,300,000
Interest rate (as a percent)	2.00%		2.00%
Conversion rate	0.0098643
Conversion price (in dollars per share) \| $ / shares	$ 101.38
Aggregate principal amount			$ 1,000
Convertible Note Due 2023 \| Debt Instrument, Redemption, Period One \| Senior Notes
Debt Instrument [Line Items]
Threshold trading days \| trading_day			20
Consecutive trading days \| trading_day			30
Redemption price percentage			130.00%
Convertible Note Due 2023 \| Debt Instrument, Redemption, Period Two \| Senior Notes
Debt Instrument [Line Items]
Consecutive trading days \| segment			5
Debt instrument business days \| business_day			5
Redemption price percentage			98.00%
Credit facility \| Line of Credit
Debt Instrument [Line Items]
Senior secured revolving line of credit						$ 550,000,000
Debt issuance costs		$ 1,700,000
Borrowings outstanding			$ 0
Unamortized debt issue costs			$ 900,000	$ 1,300,000
Credit facility \| Line of Credit \| Minimum
Debt Instrument [Line Items]
Commitment fee (as a percent)			0.20%
Fronting fees (as a percent)			1.25%
Credit facility \| Line of Credit \| Minimum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread (as a percent)		1.25%
Credit facility \| Line of Credit \| Minimum \| Base Rate
Debt Instrument [Line Items]
Basis spread (as a percent)		0.25%
Credit facility \| Line of Credit \| Maximum
Debt Instrument [Line Items]
Commitment fee (as a percent)			0.35%
Fronting fees (as a percent)			2.00%
Credit facility \| Line of Credit \| Maximum \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Basis spread (as a percent)		2.00%
Credit facility \| Line of Credit \| Maximum \| Base Rate
Debt Instrument [Line Items]
Basis spread (as a percent)		1.00%