Supplemental Financial Data - Oil and Gas Producing Activities (unaudited) (Details 1) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Oil and gas properties
Proved oil and gas properties	$ 351,488	$ 347,059
Unproved properties	4,872	5,416
Accumulated depreciation, depletion, amortization and impairment	(109,344)	(98,604)
Net oil and gas properties	$ 247,016	$ 253,871

Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities.

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- Definition

Capitalized costs of proved properties that include fee ownership or a lease, concession, or other interest representing the right to extract oil or gas subject to such terms as may be imposed by the conveyance of that interest.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 235
-Section 50
-Paragraph 13
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Capitalized costs of unproven properties that include fee ownership or a lease, concession, or other interest representing the right to extract oil or gas subject to such terms as may be imposed by the conveyance of that interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 932
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- Definition

Net amount of capitalized costs relating to oil and gas producing activities.

+ References

+ Details

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