Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2018

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of fair value of business acquired

	Amount   (in thousands)
Fair value of Carbon common shares transferred as consideration	$	8,327
Fair value of NCI		16,466
Fair value of previously held interest		7,243
Fair value of contribution associated with acquisition of Yorktown’s interest in CCC		8,637
Fair value of business acquired	$	40,673

Schedule of assets acquired and liabilities assumed

	Amount  (in thousands)
Cash	$	275
Accounts receivable:
Joint interest billings and other		690
Receivable - related party		1,610
Prepaid expense, deposits, and other current assets		1,723
Oil and gas properties:
Proved		65,114
Unproved		1,495
Other property, plant, and equipment, net		877
Other non-current assets		475
Accounts payable and accrued liabilities		(6,054	)
Commodity derivative liability - current		(916	)
Commodity derivative liability - non-current		(1,729	)
Asset retirement obligations - current		(384	)
Asset retirement obligations - non-current		(2,537	)
Subordinated Notes, related party, net		(8,874	)
Senior Revolving Notes, related party		(11,000	)
Notes payable		(92	)
Total net assets acquired	$	40,673

Schedule of unaudited pro-forma consolidated results

	Unaudited Pro Forma  Consolidated Results For Year Ended  December 31,
(in thousands, except per share amounts)	2018			2017
Revenue	$	33,256		$	35,122
Net (loss) income before non-controlling interests		5,232			13,969
Net (loss) income attributable to non-controlling interests		(2,334	)		92
Net (loss) income attributable to controlling interests	$	7,566		$	13,877
Net income per share (basic)	$	1.00		$	2.49
Net income per share (diluted)	$	0.96		$	2.14

Seneca Acquisition [Member]

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of assets acquired and liabilities assumed

	Amount  (in thousands)
Identifiable assets acquired:
Proved oil and gas properties	$	38,021
Unproved oil and gas properties		100
Other property, plant and equipment		588
Other assets		167
Total identified assets	$	38,876

Old Ironsides [Member]

Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]

Schedule of fair value of business acquired

	Amount   (in thousands)
Cash consideration	$	33,000
Old Ironsides Notes		25,065
Fair value of previously held equity interest		14,158
Fair value of business acquired	$	72,223

Schedule of assets acquired and liabilities assumed

	Amount  (in thousands)
Cash	$	12,283
Accounts receivable:
Revenue		12,834
Trade receivable		1,941
Commodity derivative asset		198
Inventory		900
Prepaid expenses, deposits, and other current assets		456
Oil and gas properties:
Proved		107,499
Unproved		1,869
Other property, plant and equipment, net		15,626
Other non-current assets		514
Accounts payable and accrued liabilities		(19,114	)
Due to related parties		(458	)
Firm transportation contract obligations		(18,724	)
Asset retirement obligations		(5,626	)
Notes payable		(37,975	)
Total net assets acquired	$	72,223

Schedule of unaudited pro-forma consolidated results

	For Year Ended  December 31,		For the period of April 3, 2017 (inception) through December 31,
(in thousands, except per share amounts)	2018		2017
Revenue	$	136,592	$	54,058
Net (loss) income before non-controlling interests		11,320		7,208
Net (loss) income attributable to non-controlling interests		4,375		81
Net (loss) income attributable to controlling interests	$	5,596		7,127
Net income per share (basic)	$	0.74		1.26
Net income per share (diluted)	$	0.69		0.62