K. QUARTERLY DATA (UNAUDITED) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

	First			Second			Third			Fourth
Year ended December 31, 2019	Quarter			Quarter			Quarter			Quarter
Revenue	$	180		$	164		$	127		$	119
Operating (expense)		(179	)		(231	)		(176	)		(100	)
Corporate general and administrative expense		(88	)		(134	)		(92	)		(98	)
Impairment of natural gas and oil properties		—			—			(2,285	)		—
Other income (expense) net		213			60			106			62
Income (loss) allocable to common shareholders		126			(141	)		(2,320	)		(17	)
Income (loss) per common share – basic	$	0.02		$	(0.03	)	$	(0.45	)	$	0.00
		First			Second			Third			Fourth
Year ended December 31, 2018		Quarter			Quarter			Quarter			Quarter
Revenue	$	204		$	173		$	167		$	138
Operating (expense)		(275	)		(239	)		(186	)		(144	)
Corporate general and administrative expense		(75	)		(108	)		(99	)		(71	)
Impairment of natural gas and oil properties		—			—			—			—
Other income (expense) net		12			—			(3	)		22
Income (loss) allocable to common shareholders	$	(134	)	$	(174	)	$	(121	)	$	(55	)
Income (loss) per common share – basic	$	(0.07	)	$	(0.08	)	$	(0.06	)	$	0.00
		First			Second			Third			Fourth
Year ended December 31, 2017		Quarter			Quarter			Quarter			Quarter
Revenue	$	195		$	243		$	194		$	159
Operating (expense)		(256	)		(256	)		(254	)		(261	)
Corporate general and administrative expense		(100	)		(122	)		(95	)		(91	)
Impairment of natural gas and oil properties		—			—			—			(2,626	)
Other income (expense) net		(11	)		11			65			(30	)
Net income (loss) from continuing operations		(172	)		(124	)		(90	)		(2,849	)
Net income (loss) from discontinued operations		13			(11	)		(11	)		(2	)
Income (loss) allocable to common shareholders	$	(159	)	$	(135	)	$	(101	)	$	(2,851	)
Income (loss) per common share – basic	$	(0.08	)	$	(0.07	)	$	(0.05	)	$	(1.39	)