Changes in Non-Cash Working Capital (Tables)

3 Months Ended

Jun. 30, 2013

Changes in Non-Cash Working Capital

Schedule of changes in non-cash working capital

	Three Months Ended
	June 30,
	2013			2012
Margin deposits	$	11,551		$	(22,321	)
Trade receivables	960			2,110
Accrued receivables	77,427			22,920
Natural gas inventory	(45,693		)	7,216
Prepaid expenses and other current assets	1,538			(954		)
Other assets	(63		)	—
Trade payables	336			(489		)
Accrued liabilities	32,428			8,306
Deferred revenue	6,261			(11,235		)
Other long-term liabilities	(79		)	—
Total	$	84,666		$	5,553