Assets Used to Acquire Other Investments

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

Discount Rate Used in Valuation of Fair Value of Oil and Gas Reserve Quantities

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

Name:	invest_InvestmentLineItems
Namespace Prefix:	invest_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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

- Definition

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3602-108585

+ Details

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

- Details

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- Details

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Namespace Prefix:
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- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_InvestmentsMember
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Business Description And Significant Accounting Policies: Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 28, 2019
Investment [Line Items]
Assets Held For Sale Used to Acquire Other Investments				$ 28,000
Discount Rate Used in Valuation of Fair Value of Oil and Gas Reserve Quantities	10.00%
Impairment of investment	$ 19,741	$ 0	$ 0
Investments	21,929	41,013
Equity Securities
Investment [Line Items]
Investments	8,359	28,100
Cash Surrender Value
Investment [Line Items]
Investments	13,056	12,812
Investments
Investment [Line Items]
Investments	$ 514	$ 101