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CONVERTIBLE SENIOR NOTES, NET (Schedule of Net Carrying Amount of Liability and Equity Components of Notes) (Details) - Convertible Senior Note [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Nov. 30, 2019
Net carrying amount of the liability and equity components:
Principal amount	$ 575,000	$ 500,000
Unamortized discount	(77,287)
Unamortized issuance costs	(12,594)
Net carrying amount	485,119
Equity component, net of issuance costs of $2,046 and deferred taxes of $11,022	$ 65,932

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

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Amount, after accumulated amortization, of debt discount.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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