XML 38 R26.htm IDEA: XBRL DOCUMENT v3.21.1

EQUITY INVESTMENTS (Tables)

3 Months Ended

Mar. 31, 2021

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Method Investments

Investments accounted for by the equity method consist of the following as of March 31, 2021 and December 31, 2020:

									Carrying value												Loss from equity method investments
			Approximate ownership %						March 31, 2021						December 31, 2020						Three months ended March 31,
																					2021						2020
									(In thousands)
Investment in Grizzly Oil Sands ULC			24.5		%				$	27,044					$	24,816					$	(342)					$	(143)
Investment in Mammoth Energy Services, Inc.			21.5		%				—						—						—						(10,646)
									$	27,044					$	24,816					$	(342)					$	(10,789)

Schedule of Equity Investments - Balance Sheet

The tables below summarize financial information for the Company’s equity investments as of March 31, 2021 and December 31, 2020.

Summarized balance sheet information:

			March 31, 2021						December 31, 2020
						(In thousands)
Current assets			$	462,478					$	483,303
Noncurrent assets			$	1,079,557					$	1,092,495
Current liabilities			$	125,359					$	132,978
Noncurrent liabilities			$	124,628					$	148,240

Schedule of Equity Investments - Income Statement

Summarized results of operations:    

			Three months ended March 31,
			2021						2020
			(In thousands)
Gross revenue			$	66,805					$	97,383
Net loss			$	(13,606)					$	(85,031)

X

- Definition

Schedule Of Equity Method Investments, Balance Sheet Disclosures [Table Text Block]

+ References

No definition available.

+ Details

Name:	gpor_ScheduleOfEquityMethodInvestmentsBalanceSheetDisclosuresTableTextBlock
Namespace Prefix:	gpor_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Schedule Of Equity Method Investments, Income Statement Disclosures [Table Text Block]

+ References

No definition available.

+ Details

Name:	gpor_ScheduleOfEquityMethodInvestmentsIncomeStatementDisclosuresTableTextBlock
Namespace Prefix:	gpor_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

+ Details

Name:	us-gaap_EquityMethodInvestmentsTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration