Convertible Note Principal Amount

No definition available.

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- Definition

Number of shares issued for each share of convertible senior notes that is converted.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

Liability component of the gross proceeds of Convertible Notes prior to their maturity date.

+ References

No definition available.

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- Definition

Amount of amortization expense attributable to debt issuance costs.

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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

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- Definition

Latest date before maturity which the issuer can call the outstanding debt instrument for repayment or conversion to equity, in CCYY-MM-DD format.

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- Definition

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

Description of the frequency of periodic payments (monthly, quarterly, annual).

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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

Date the debt instrument was issued, in CCYY-MM-DD format.

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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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No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

End date of debt instrument redemption period, in CCYY-MM-DD format.

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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

Weighted average interest rate of debt outstanding.

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No definition available.

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- Definition

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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- 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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- Definition

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

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No definition available.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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No definition available.

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- Definition

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

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- 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.

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

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No definition available.

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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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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.

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No definition available.

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The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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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.

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LONG-TERM DEBT ADDITIONAL INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands									3 Months Ended		12 Months Ended
	May 15, 2026	Oct. 15, 2022	Sep. 15, 2021	Mar. 15, 2021	May 21, 2020	Sep. 15, 2019	Sep. 12, 2016	Oct. 03, 2012	Jun. 30, 2021	Sep. 30, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 14, 2017	Jun. 30, 2017	Dec. 14, 2016	Sep. 14, 2016
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage											1.25%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage											0.50%
Redemption of senior notes											$ 519,375	$ 0	$ 0
Loss on extinguishment of debt											(24,747)	$ 0	0
Convertible Note, Conversion Price												$ 85.39
Debt Issuance Costs ($)											$ 50	$ 15,556	$ 974
Security Deposit															$ 9,300
5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Issuance Date											Nov. 29, 2017
Debt Instrument, Interest Rate, Stated Percentage											5.75%
6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Issuance Date							Sep. 12, 2016
Debt Instrument, Interest Rate, Stated Percentage											6.125%
1.125% Convertible Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Issuance Date										Sep. 12, 2016
Debt Instrument, Interest Rate, Stated Percentage											1.125%
Convertible Senior Note, Shares Issued Upon Conversion											11.7113
7.75% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Issuance Date								Oct. 03, 2012
Debt Instrument, Interest Rate, Stated Percentage											7.75%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Amortization of Debt Issuance Costs											$ 6,200	8,800
RNG Credit Facility [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount ($)															11,700
5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Principal amount											600,000	0
Debt Issuance Costs, Gross											7,600
Unamortized Debt Issuance Costs											(7,555)	0
7.75% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Redemption Premium											(19,400)
Unamortized Debt Issuance Costs											0	(6,443)		$ (5,400)
Loss on extinguishment of debt											(24,700)
Senior Notes ($)											$ 0	$ 500,000
First Payment [Member] \| 5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Frequency of Periodic Payment											May 15
First Payment [Member] \| 6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Frequency of Periodic Payment											March 15
First Payment [Member] \| 1.125% Convertible Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Frequency of Periodic Payment											March 15
Second Payment [Member] \| 5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Frequency of Periodic Payment											November 15
Second Payment [Member] \| 6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Frequency of Periodic Payment											September 15
Second Payment [Member] \| 1.125% Convertible Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Frequency of Periodic Payment											September 15
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt, Weighted Average Interest Rate												2.70%
Maximum Borrowing Base [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity ($)											$ 1,100,000
1.125% Convertible Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Principal amount											200,000	$ 200,000
Liability component of gross proceeds of Convertible Notes												160,500
Unamortized Debt Issuance Costs											$ (3,615)	(4,584)				$ (4,800)
Debt Instrument, Interest Rate, Effective Percentage											5.80%
Share Price											$ 51.54
Convertible Debt, Equity Component ($)												39,500
6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Unamortized Debt Issuance Costs											$ (6,570)	(7,544)					$ (7,800)
Senior Notes ($)											400,000	$ 400,000
Scenario, Forecast [Member] \| 1.125% Convertible Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Convertible Note Principal Amount				$ 1
Scenario, Forecast [Member] \| 2024 Senior notes redemption price, after September 15, 2019. [Member] \| 6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage						106.125%
Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date	May 15, 2026		Sep. 15, 2021
Subsequent Event [Member] \| 5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Period, End Date									May 15, 2021
Subsequent Event [Member] \| 6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Period, End Date						Sep. 15, 2019
Subsequent Event [Member] \| 1.125% Convertible Senior Notes due 2021 [Member]
Debt Instrument [Line Items]
Convertible Note, Conversion Price				$ 85.39
Debt Instrument, Call Date, Latest				Mar. 15, 2021
Subsequent Event [Member] \| 7.75% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date		Oct. 15, 2022
Subsequent Event [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Expiration Date					May 21, 2020
Subsequent Event [Member] \| 2026 Senior notes redemption price, after to May 15, 2021 [Member] \| 5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage									104.313%
Subsequent Event [Member] \| 2026 Senior notes redemption price, prior to May 15, 2021 [Member] \| 5.75% Senior Notes due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage									105.75%
Subsequent Event [Member] \| 2024 Senior notes redemption price, prior to September 15, 2019 [Member] \| 6.125% Senior Notes due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Redemption Price, Percentage						104.594%
Maximum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity ($)											1,000,000				$ 950,000
Minimum [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity ($)											$ 700,000