13. ADDITIONAL BALANCE SHEET INFORMATION

Certain balance sheet amounts are comprised of the following:

	March 31,			December 31,
(In thousands)	2014			2013
Accounts receivable, net
Trade accounts	$	242,367		$	215,361
Joint interest accounts	3,469			7,261
Income taxes receivable	532			922
Other accounts	516			746
	246,884			224,290
Allowance for doubtful accounts	(1,811		)	(1,814		)
	$	245,073		$	222,476
Inventories
Natural gas in storage	$	3,169		$	9,056
Tubular goods and well equipment	7,193			8,396
Other accounts	30			16
	$	10,392		$	17,468
Other current assets
Prepaid balances and other	1,415			2,587
Derivative instruments	—			3,019
	$	1,415		$	5,606
Other assets
Deferred compensation plan	$	12,886		$	12,507
Debt issuance cost	15,350			16,476
Equity method investment	32,971			26,892
Other accounts	169			79
	$	61,376		$	55,954
Accounts payable
Trade accounts	$	56,956		$	26,023
Natural gas purchases	2,933			2,052
Royalty and other owners	83,902			79,150
Accrued capital costs	120,091			146,899
Taxes other than income	18,869			13,677
Drilling advances	8,334			14,093
Producer gas imbalances	69			69
Other accounts	6,531			6,838
	$	297,685		$	288,801
Accrued liabilities
Employee benefits	$	24,645		$	43,599
Taxes other than income	6,797			6,894
Interest payable	12,637			20,211
Other accounts	3,124			2,897
	$	47,203		$	73,601
Other liabilities
Deferred compensation plan	$	30,983		$	33,211
Other accounts	6,899			13,043
	$	37,882		$	46,254