Equity Investments (Tables)

3 Months Ended

Oct. 31, 2018

Equity Investments [Abstract]

Summary of carrying value of equity investments

	Carrying Value
	(in thousands)
Balance, August 1, 2018	$	1,883
Adoption of change in accounting for equity investments		1,213
Adjusted balance, August 1, 2018		3,096
Adjustment for observable transactions involving a similar investment from the same issuer		22
Impairments		—
Balance, October 31, 2018	$	3,118

Summary of unrealized gains and losses for all equity investments

	Three Months Ended October 31,
	2018			2017
	(in thousands)
Net (losses) gains recognized during the period on equity investments	$	(46	)	$	20
Less: net gains and losses recognized during the period on equity investments sold during the period		—			—
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date	$	(46	)	$	20