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

3 Months Ended

Jul. 31, 2016

Stock appreciation rights

Equity based compensation arrangements

Summary of changes to liability for equity based compensation arrangements

	As of
	July 31, 2016
Stock appreciation rights as of April 30, 2016 (at fair value)	$	20,533
Amounts redeemed		(20)
Change in fair value		(92)
Stock appreciation rights as of July 31, 2016 (at fair value)	$	20,421

Deferred compensation

Equity based compensation arrangements

Summary of changes to liability for equity based compensation arrangements

	As of
	July 31, 2016
Deferred compensation as of April 30, 2016 (at fair value)	$	3,270
Amounts redeemed		—
Change in fair value		46
Deferred compensation as of July 31, 2016 (at fair value)	$	3,316

Noncontrolling interest awards

Equity based compensation arrangements

Summary of changes to liability for equity based compensation arrangements

	As of
	July 31, 2016
Non‑controlling interests as of April 30, 2016 (at fair value)	$	26,585
Amounts redeemed		—
Change in fair value		246
Non‑controlling interests as of July 31, 2016 (at fair value)	$	26,831