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Adjustments To Additional Paid In Capital, Purchase Of Capped Call

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Payments For Purchase Of Capped Call Related To Convertible Debt

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

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

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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.

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

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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.

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

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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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Amount, after accumulated amortization, of debt premium.

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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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The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date.

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

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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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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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Long-Term Debt - Narrative (Details)	1 Months Ended	3 Months Ended		9 Months Ended
Long-Term Debt - Narrative (Details)	Apr. 30, 2020 USD ($) day $ / shares	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Gain (loss) on extinguishment of debt		$ (108,000)	$ 0	$ 10,812,000	$ (7,614,000)
Proceeds from issuance of convertible senior notes				334,650,000	0
Cost incurred for capped calls, gross				35,673,000	0
Income tax benefit capped call	$ 9,322,000
Purchase of capped call				$ 26,351,000
Line of Credit
Debt Instrument [Line Items]
Debt instrument, face amount						$ 175,000,000
Minimum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				1.75%
Maximum \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				2.75%
Capped Call Transaction
Debt Instrument [Line Items]
Cost incurred for capped calls, gross	35,673,000
Purchase of capped call	$ 26,351,000
Capped Call Transaction \| Call Option \| Minimum
Debt Instrument [Line Items]
Strike price (in dollars per share) \| $ / shares	$ 12.84
Capped Call Transaction \| Call Option \| Maximum
Debt Instrument [Line Items]
Strike price (in dollars per share) \| $ / shares	$ 18.19
Senior Notes Due March 2027
Debt Instrument [Line Items]
Debt instrument, face amount		$ 700,000,000		$ 700,000,000			$ 500,000,000
Stated rate, debt instrument		7.25%		7.25%
Senior Notes Due March 2027 \| Debt Instrument, Issuance, Period Two
Debt Instrument [Line Items]
Stated rate, debt instrument		7.25%		7.25%
Senior Notes Due March 2027 \| Debt Instrument, Issuance, Period One
Debt Instrument [Line Items]
Debt instrument, face amount			$ 500,000,000		$ 500,000,000
Stated rate, debt instrument			7.25%		7.25%
Senior Notes Due March 2027 \| Private Offering \| Debt Instrument, Issuance, Period Two
Debt Instrument [Line Items]
Debt instrument, face amount		$ 200,000,000		$ 200,000,000
Unamortized bond premium		7,000,000		7,000,000
Senior Notes Due April 2022
Debt Instrument [Line Items]
Debt instrument, face amount		$ 363,348,000		$ 363,348,000			$ 894,307,000
Stated rate, debt instrument		5.875%	5.875%	5.875%	5.875%
Purchase of outstanding debt		$ 50,000,000		$ 530,959,000	$ 400,000,000
Gain (loss) on extinguishment of debt		(108,000)		10,812,000	$ (7,614,000)
Convertible Senior Notes Due 2026
Debt Instrument [Line Items]
Debt instrument, face amount		$ 345,000,000		$ 345,000,000
Stated rate, debt instrument		2.25%		2.25%
Convertible Senior Notes Due 2026 \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, face amount	$ 345,000,000
Stated rate, debt instrument	2.25%
Conversion ratio (in shares)	77.8816
Conversion price (in dollars per share) \| $ / shares	$ 12.84
Debt issuance costs gross	$ 10,350,000
Convertible Senior Notes Due 2026 \| Debt Instrument, Redemption, Period One \| Convertible Debt
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	130.00%
Threshold trading days \| day	20
Threshold consecutive trading days \| day	30
Convertible Senior Notes Due 2026 \| Debt Instrument, Redemption, Period Two \| Convertible Debt
Debt Instrument [Line Items]
Threshold percentage of stock price trigger	98.00%
Threshold trading days \| day	5
Threshold consecutive trading days \| day	10
Convertible 2.25% Senior Notes Due 2026, Additional Option To Initial Purchasers \| Convertible Debt
Debt Instrument [Line Items]
Debt instrument, face amount	$ 45,000,000
Convertible 2.25% Senior Notes Due 2026, Liability Component \| Convertible Debt
Debt Instrument [Line Items]
Debt issuance costs gross	7,024,000
Convertible 2.25% Senior Notes Due 2026, Equity Component \| Convertible Debt
Debt Instrument [Line Items]
Debt issuance costs gross	$ 3,326,000
Cardinal States Gathering Company Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity		$ 125,000,000		$ 125,000,000
Cardinal States Gathering Company Credit Facility \| Line of Credit \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				4.75%
CSG Holdings II LLC Credit Facility \| Line of Credit
Debt Instrument [Line Items]
Line of credit facility maximum borrowing capacity		$ 50,000,000		$ 50,000,000
CSG Holdings II LLC Credit Facility \| Line of Credit \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate				6.75%