Long-Term Debt (Summary of Unamortized Debt Issuance Costs and Discounts) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Debt issuance costs	$ 34,533	$ 34,533
Debt discounts	24,536	24,536
Total debt issuance costs and discounts at origination	59,069	59,069
Less: Amortization of debt issuance costs and discounts	(28,175)	(23,532)
Total unamortized debt issuance costs and discounts	$ 30,894	$ 35,537

Amount of accumulated amortization of debt issuance costs.

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-Name Accounting Standards Codification
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-SubTopic 30
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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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 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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