Accounts Receivable and Major Customers (Tables)

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Summary of Accounts Receivable

The following table summarizes our accounts receivable by type as of the dates presented:

	December 31,
	2020		2019
Customers	$	39,672	$	63,165
Joint interest partners	3,079		6,929
Other	8		674
	42,759		70,768
Less: Allowance for credit losses	(197)		(52)
	$	42,562	$	70,716

Revenue from External Customers by Products and Services [Table Text Block]

Financing Receivable, Allowance for Credit Loss

The following table summarizes the activity in our allowance for credit losses, by portfolio segment, for the year ended December 31, 2020:

			Joint Interest Partners
	Customers		Mutual Operators		Large Partners		All Others		Total
Balance at beginning of period	$	—	$	—	$	—	$	52	$	52
Adjustment upon adoption	—		—		60		16		76
Provision for expected credit losses	—		9		27		33		69
Write-offs and recoveries	—		—		—		—		—
Balance at end of period	$	—	$	9	$	87	$	101	$	197