Commitments (Tables)

3 Months Ended

Jul. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Summary of Operating Leases

The minimum lease rentals required under operating leases are payable in the following amounts over the following years ended July 31, exclusive of approved helicopter lease rejections but inclusive of lease rejections still subject to the approval of the Bankruptcy Court, which may substantially alter our minimum lease rentals. The May 5, 2016 filing of the Petitions by the Debtors in the Bankruptcy Court caused an event of default under the terms of all of our helicopter lease agreements. Any efforts by creditors to enforce such payment obligations as existed before the Petition Date are automatically stayed as a result of the filing of the Petitions, and the holders’ rights of enforcement are subject to the applicable provisions of the Bankruptcy Code. We continue to make the required payments for the post-petition period for helicopter leases for which we have not filed motions for rejection with the Bankruptcy Court in accordance with the below payment profile.

	Helicopter operating leases (i)		Building, land and equipment operating leases		Total operating leases
2017	$	151,557	$	13,642	$	165,199
2018	145,208		9,876		155,084
2019	129,897		7,703		137,600
2020	108,345		4,602		112,947
2021	87,336		3,961		91,297
Thereafter	83,350		31,192		114,542
	$	705,693	$	70,976	$	776,669

(i) The helicopter operating leases exclude the remaining contractual lease commitments for 7 helicopters that we have permanently ceased use of in our operations and which do not form part of our prospective fleet strategy, which have been provided for as part of restructuring expense (note 4) and all Bankruptcy Court approved lease rejections (note 9).