Accounts Receivable and Major Customers (Tables)

3 Months Ended

Mar. 31, 2013

Receivables [Abstract]

Summary of Accounts Receivable

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

	As of
	March 31,			December 31,
	2013			2012
Customers	$	49,978		$	43,967
Joint interest partners	13,197			16,154
Other	2,851			4,523
	66,026			64,644
Less: Allowance for doubtful accounts	(1,648		)	(1,666		)
	$	64,378		$	62,978