Segment Disclosures (Tables)

6 Months Ended

Sep. 30, 2013

Segment Disclosures

Summary of net revenues and long-lived assets by geographic area

	Three Months Ended						Six Months Ended
	September 30,						September 30,
	2013			2012			2013		2012
Net realized revenues
U.S.	$	11,282		$	18,817		$	19,775	$	30,736
Canada	39,213			34,419			67,790		70,902
Net unrealized revenues
U.S.	(6,146		)	(12,716		)	6,308		(28,093		)
Canada	(7,486		)	(15,975		)	178		(51,787		)
Inter-entity
U.S.	—			—			—		—
Canada	—			—			—		—
	$	36,863		$	24,545		$	94,051	$	21,758

	September 30,		March 31,
	2013		2013
Long-lived assets (at period end)
U.S.	$	404,082	$	411,420
Canada	844,947		858,604
	$	1,249,029	$	1,270,024