Receivables (Tables)

12 Months Ended

Dec. 31, 2018

Receivables [Abstract]

Schedule of Accounts Receivable

	Successor			Predecessor
(in thousands)	December 31, 2018			December 31, 2017
Production sales	$	31,532		$	26,916
Joint interest billings	18,147			13,821
Pooling interest (1)	18,786			35,839
Allowance for doubtful accounts	(95		)	(415		)
Total accounts receivable, net	$	68,370		$	76,161

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(1) Pooling interest relates to Oklahoma’s forced pooling process which permits mineral interest owners the option to participate in the drilling of proposed wells.  The pooling interest listed above represents unbilled costs for wells where the option remains pending.  Depending upon the mineral owner’s decision, these costs will be billed to them or added to oil and gas properties.

Activity in our allowances for doubtful accounts for trade and related party receivables were as follows:

	Successor			Predecessor
(in thousands)	February 9, 2018 Through December 31, 2018			January 1, 2018 Through February 8, 2018		Year Ended December 31, 2017			Year Ended December 31, 2016
Trade receivables:
Balance at beginning of period	$	415		$	415	$	490		$	1,030
Charged to expense	25			—		(69		)	243
Deductions	(345		)	—		(6		)	(783		)
Balance at end of period	$	95		$	415	$	415		$	490
Related party receivables:
Balance at beginning of period	$	—		$	—	$	—		$	—
Charged to expense(1)	22,438			—		—			—
Deductions	—			—		—			—
Balance at end of period	$	22,438		$	—	$	—		$	—

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(1) At December 31, 2018, receivables, including notes receivable, from HMI were approximately $23.4 million. Upon receiving payment of approximately $1.0 million dollars in 2019, the balance was reduced to $22.4 million. Because HMI disputes it obligations under the promissory notes with us, we established an allowance for doubtful accounts totaling $22.4 million which is included in general and administrative expense in 2018.