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Derivative Activities - Effects of Derivatives on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ 233,175	$ (61,731)
Swaptions
Derivative [Line Items]
Derivative Fair Value Income (Loss)	666	(3,291)
Collars
Derivative [Line Items]
Derivative Fair Value Income (Loss)	0	(4,524)
Three Way Collars
Derivative [Line Items]
Derivative Fair Value Income (Loss)	(11,362)	0
Calls
Derivative [Line Items]
Derivative Fair Value Income (Loss)	275	0
Basis Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	21,343	3,415
Commodity | Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	228,354	(57,418)
Freight | Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ (6,101)	$ 87

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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- Definition

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+ References

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