Supplemental Oil and Gas Disclosures (Tables)

12 Months Ended

Dec. 31, 2018

Oil And Gas Property Successful Effort Method

Capitalized costs related to oil and gas activities are as follows (in thousands):



	December 31,
	2018			2017
Company
Unproved properties	$	—		$	—
Proved properties	400			400
	400			400
Accumulated depreciation and depletion	(293		)	(275		)
Total	$	107		$	125

Company’s share of Laramie Energy
Unproved properties	$	16,379		$	13,728
Proved properties	473,763			382,789
	490,142			396,517
Accumulated depreciation, depletion, and amortization	(150,075		)	(111,119		)
Total	$	340,067		$	285,398

Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities Disclosure

Costs incurred in oil and gas activities including costs associated with assets retirement obligations, are as follows (in thousands):



	Year Ended December 31,
	2018		2017		2016
Company
Development costs—other	$	—	$	—	$	—
Total	$	—	$	—	$	—

Company’s share of Laramie Energy
Acquisition costs	$	—	$	—	$	65,324
Development costs—other	50,867		49,273		12,805
Total	$	50,867	$	49,273	$	78,129

Capitalized Exploratory Well Costs, Roll Forward

A summary of the results of operations for oil and gas producing activities, excluding general and administrative costs, is as follows (in thousands):



	Year Ended December 31,
	2018			2017		2016
Company
Revenue
Oil and gas revenues	$	51		$	288	$	190
Expenses
Production costs	191			29		147
Depletion and amortization	17			66		69
Exploration	—			—		—
Abandoned and impaired properties	—			—		—
Results of operations of oil and gas producing activities	$	(157	)	$	193	$	(26	)

Company’s share of Laramie Energy
Revenue
Oil and gas revenues	$	93,493		$	66,783	$	43,607
Expenses
Production costs	42,706			32,606		27,750
Depletion, depreciation, and amortization	26,819			21,277		17,534
Results of operations of oil and gas producing activities	$	23,968		$	12,900	$	(1,677	)

Total results of operations of oil and gas producing activities	$	23,811		$	13,093	$	(1,703	)