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Debt - 2020 Debt Transactions - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Feb. 29, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Instrument [Line Items]
Debt instrument carrying amount		$ 1,579,118		$ 1,299,982
Payments of loan costs		8,332
Loss (gain) on extinguishment of debt		(5,349)	$ 680
2030 Notes
Debt Instrument [Line Items]
Debt instrument carrying amount	$ 550,000	$ 550,000
Private offered aggregate principal amount rate	5.00%	5.00%
Net percentage of proceeds from debt issuance	100.00%
Payments of loan costs	$ 8,300
2023 Facility
Debt Instrument [Line Items]
Debt instrument carrying amount		$ 310,000		27,000
Line of credit facility maximum borrowing capacity	900,000
2024 Notes
Debt Instrument [Line Items]
Debt instrument carrying amount	$ 503,900			503,923
Private offered aggregate principal amount rate	5.625%
2027 Notes
Debt Instrument [Line Items]
Debt instrument carrying amount	$ 47,500	427,500		$ 475,000
Private offered aggregate principal amount rate	6.75%
2024 Notes and 2027 Notes
Debt Instrument [Line Items]
Loss (gain) on extinguishment of debt		28,000
Gain (loss) on extinguishment of debt attributable to payment of redemption premiums on extinguished notes		22,700
Write-off of unamortized debt issuance costs and debt premium		$ 5,300

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Debt instrument issue price.

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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.

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

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Reflects the difference between the fair value of payments made to legally extinguish a debt and its carrying value at that time. This item excludes the write-off of amounts previously capitalized as debt issuance costs.

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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 outflow for loan and debt issuance costs.

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