Long-term debt and capital lease obligations (Tables)

3 Months Ended

12 Months Ended

Jul. 31, 2012

Apr. 30, 2012


	Principal Repayment terms		Facility maturity dates		July 31, 2012			April 30, 2012
Senior secured notes		At maturity		October 2020	$	1,084,423		$	1,084,109

Revolving credit facility:
US LIBOR plus margin		At maturity		October 2015		195,000			125,000
Alternate Base Rate plus margin		At maturity		October 2015		9,000			0

Other term loans:
Eurocopter Loan - 2.50%		On demand		—		2,054			4,623
EDC-B.A. CDOR rate (6 month) plus a 0.8% margin		Semi-annually		June 2014		2,167			2,745
EDC-B.A. CDOR rate (6 month) plus a 0.8% margin		Semi-annually		April 2018		5,170			10,476

Capital lease obligations		Quarterly		September 2012 - May 2014		26,778			26,922

Boundary Bay financing – 6.93%		Monthly		April 2035		32,593			33,205

Total long-term debt and capital lease obligations						1,357,185			1,287,080

Less: current portion						(15,104	)		(17,701	)

Long-term debt and capital lease obligations					$	1,342,081		$	1,269,379


	Principal Repayment terms		Facility maturity dates		2012			2011

Senior secured notes		At maturity		October 2020	$	1,084,109		$	1,082,936

Revolving credit facility:
US LIBOR plus margin (i)		At maturity		October 2015		125,000			70,000

Other term loans:
Eurocopter Loan - 2.50%		At maturity		June 2011		—			1,618

Eurocopter Loan - 2.50%		On demand		—		4,623			—

EDC US loan - 5.04%		Semi-annually		November 2011		—			1,959
EDC-B.A. CDOR rate (6 month) plus margin (i)		Semi-annually		June 2014		2,745			3,993
EDC-B.A. CDOR rate (6 month) plus margin (i)		Semi-annually		April 2018		10,476			13,609
Capital lease obligations		Quarterly		June 2012 - May 2014		26,922			117,371

Boundary Bay Financing - 6.93%		Monthly		April 2035		33,205			—


Total long-term debt						1,287,080			1,291,486
Less: current portion						(17,701	)		(106,642	)


Long-term					$	1,269,379		$	1,184,844

(i)	Margins range from 0.8% to 4.5% during the year ended April 30, 2012 (2011 – 0.8% to 3.75%)