Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Operating Activities
Net earnings (loss)	$ 7,967	$ (37,346)
Adjustments to reconcile net earnings (loss) to net cash provided by operating activities:
Unrealized foreign exchange losses (gains)	980	(83)
Deferred income tax benefit	(300)	(11,934)
Unrealized risk management (gains) losses	(20,118)	51,148
Depreciation and amortization	10,333	11,824
Deferred charges amortization	835	908
Loss on extinguishment of debt		599
Write-down of inventory		22,281
Changes in non-cash working capital	84,666	5,553
Net cash provided by operating activities	84,363	42,950
Investing Activities
Property, plant and equipment expenditures	(302)	(12,438)
Proceeds on sale of assets		2,200
Net cash used in investing activities	(302)	(10,238)
Financing Activities
Proceeds from revolver drawings	51,000	65,948
Revolver payments	(105,000)	(82,948)
Payment of deferred financing costs		(2,908)
Proceeds from obligations under capital lease		677
Repayments of obligations under capital lease	(311)
Distributions to Unitholders	(12,316)	(12,316)
Net cash used in financing activities	(66,627)	(31,547)
Effect of translation on foreign currency cash and cash equivalents	(169)	(149)
Net increase in cash and cash equivalents	17,265	1,016
Cash and cash equivalents, beginning of period	10,610	13,342
Cash and cash equivalents, end of period	$ 27,875	$ 14,358