Face (par) amount of the original debt instrument that was repurchased.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for the settlement of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, as it matures.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

+ Details

Name:	us-gaap_RepaymentsOfSeniorDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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Balance Type:
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- Details

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Note 12 - Borrowings and Financing Activities - Extinguishment of Debt (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended				12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Loss on extinguishment of debt		$ 0	$ 5,940	$ 16,798	$ 0	$ 0	$ 22,738	$ 0
Senior Notes due 2020 and 2021
Repayments of Senior Debt				351,800
Senior Notes
Long-term Debt		887,110				$ 1,405,674	887,110
Senior Notes \| Senior Notes Due 2019
Maturities of Senior Debt	$ 158,600
Senior Notes \| Senior Notes Due 2020
Debt Instrument, Repurchased Face Amount	207,200		27,000	207,200
Long-term Debt		0					0
Senior Notes \| Senior Notes Due 2021
Debt Instrument, Repurchased Face Amount	$ 127,300		70,400	127,300
Long-term Debt		$ 0					$ 0
Senior Notes \| Senior Notes due 2020 and 2021
Repayments of Senior Debt			103,100
Loss on extinguishment of debt			$ 5,900	$ 16,800