Accounts Receivable and Major Customers

6 Months Ended

Jun. 30, 2017

Receivables [Abstract]

Accounts Receivable and Major Customers

Accounts Receivable and Major Customers

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

	June 30,			December 31,
	2017			2016
Customers	$	22,920		$	20,489
Joint interest partners	21,598			7,238
Other 1	670			3,789
	45,188			31,516
Less: Allowance for doubtful accounts	(2,381		)	(2,421		)
	$	42,807		$	29,095

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¹ Includes amounts owed to us from joint venture partners for acquisitions in prior periods, severance tax refunds approved by state taxing authorities to be returned to us and other miscellaneous non-operating items.

For the six months ended June 30, 2017, one customer accounted for $64.6 million, or approximately 91%, of our consolidated product revenues. As of June 30, 2017, $19.2 million, or approximately 84%, of our consolidated accounts receivable from customers was related to this customer. For the six months ended June 30, 2016, three customers accounted for $62.2 million, or approximately 93%, of our consolidated product revenues. The revenues generated from these customers during the six months ended June 30, 2016 were $32.1 million, $16.2 million and $13.9 million, or approximately 48%, 24% and 21% of the consolidated total, respectively. As of December 31, 2016, $16.7 million, or approximately 81%, of our consolidated accounts receivable from customers was related to these customers. No significant uncertainties exist related to the collectability of amounts owed to us by any of these customers.