Accounts Receivable and Major Customers (Tables)

12 Months Ended

Dec. 31, 2012

Receivables [Abstract]

Summary of Accounts Receivable

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

	As of December 31,
	2012			2011
Customers	$	43,967		$	49,763
Joint interest partners	16,154			22,755
Other	4,523			1,695
	64,644			74,213
Less: Allowance for doubtful accounts	(1,666		)	(1,781		)
	$	62,978		$	72,432