Stock Appreciation Rights, Deferred Compensation and Redeemable Noncontrolling Interests (Tables)

12 Months Ended

Apr. 30, 2017

Stock appreciation rights

Equity based compensation arrangements

Summary of changes to liability for equity based compensation arrangements

Stock appreciation rights as of April 30, 2015 (at book value)	$	8,069
Compensation expense recorded prior to transition guidance adjustment		594
Redemption notes		(947	)
Change in fair value		12,817
Stock appreciation rights as of April 30, 2016 (at fair value)	$	20,533
Amounts redeemed		(28	)
Change in fair value		157
Stock appreciation rights as of April 30, 2017 (at fair value)	$	20,662

Deferred compensation

Equity based compensation arrangements

Summary of changes to liability for equity based compensation arrangements

Deferred compensation as of April 30, 2015 (at book value)	$	3,490
Compensation expense recorded prior to transition guidance adjustment		81
Redemption notes		(31	)
Change in fair value		(270	)
Deferred compensation as of April 30, 2016 (at fair value)	$	3,270
Amounts redeemed		—
Change in fair value		480
Deferred compensation as of April 30, 2017 (at fair value)	$	3,750

Noncontrolling interest awards

Equity based compensation arrangements

Summary of changes to liability for equity based compensation arrangements

Non-controlling interests as of April 30, 2015 (at book value)	$	30,039
Compensation expense recorded prior to transition guidance adjustment		473
Redemption notes		(629	)
Change in fair value		(3,298	)
Non-controlling interests as of April 30, 2016 (at fair value)	$	26,585
Amounts redeemed		(5,354	)
Change in fair value		3,078
Non-controlling interests as of April 30, 2017 (at fair value)	$	24,309