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

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Start date of debt instrument redemption period, in YYYY-MM-DD format.

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

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

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Debt - $350 Million 5% Senior Notes (Details) - USD ($)	1 Months Ended		12 Months Ended
Debt - $350 Million 5% Senior Notes (Details) - USD ($)	Oct. 31, 2019	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Apr. 03, 2013
Debt Instrument [Line Items]
Loss from extinguishment of debt			$ (2,949,000)		$ (494,000)
Unamortized deferred financing costs				$ 281,000	3,079,000
Senior Notes [Member] \| $350 Million 5% Senior Notes [Member]
Debt Instrument [Line Items]
Face amount		$ 350,000,000	$ 350,000,000			$ 350,000,000.0
Stated interest rate (as a percent)		5.00%	5.00%			5.00%
Loss from extinguishment of debt					(500,000)
Unamortized deferred financing costs					$ 1,700,000
Senior Notes [Member] \| $500 Million 4.75% Senior Notes
Debt Instrument [Line Items]
Face amount	$ 500,000,000	$ 500,000,000.0
Stated interest rate (as a percent)	4.75%	4.75%
Debt instrument, maturity date		Oct. 15, 2027
Senior Notes [Member] \| $700 Million 4.75% Senior Note [Member]
Debt Instrument [Line Items]
Face amount	$ 700,000,000	$ 700,000,000	$ 700,000,000
Stated interest rate (as a percent)	4.75%	4.75%	4.75%
Redemption price (as a percent)	100.00%
Redemption date	Oct. 15, 2022
Senior Notes [Member] \| $700 Million 4.75% Senior Note [Member] \| Redemption Period One [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	103.563%
Senior Notes [Member] \| $700 Million 4.75% Senior Note [Member] \| Redemption Period Two [Member]
Debt Instrument [Line Items]
Redemption price (as a percent)	102.375%