Accounts Receivable and Major Customers

6 Months Ended

Jun. 30, 2014

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:

	As of
	June 30,			December 31,
	2014			2013
Customers	$	101,369		$	93,288
Joint interest partners	96,129			76,199
Other 1	41,003			25,538
	238,501			195,025
Less: Allowance for doubtful accounts	(176		)	(622		)
	$	238,325		$	194,403

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¹ Comprised substantially of amounts due from the seller and other parties for purchase price adjustments attributable to the EF Acquisition.

For the six months ended June 30, 2014, four customers accounted for $148.8 million, or approximately 55%, of our consolidated product revenues. The revenues generated from these customers during the six months ended June 30, 2014 were $48.4 million, $35.5 million, $34.0 million and $30.9 million or 18%, 13%, 13% and 11% of the consolidated total, respectively. As of June 30, 2014, $52.3 million, or approximately 52% of our consolidated accounts receivable from customers was related to these customers. For the six months ended June 30, 2013, four customers accounted for $93.1 million, or approximately 48% of our consolidated product revenues. The revenues generated from these customers during the six months ended June 30, 2013 were $31.3 million, $21.9 million, $20.5 million and $19.4 million or approximately 16%, 11%, 11% and 10% of the consolidated total, respectively. As of December 31, 2013, $50.7 million, or approximately 54% 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.