Fair Value Measurements (Tables)

6 Months Ended

Jan. 31, 2019

Fair Value Measurements [Abstract]

Summary of balance of assets measured at fair value on a recurring basis

	Level 1 (1)		Level 2 (2)		Level 3 (3)		Total
	(in thousands)
January 31, 2019
Debt securities	$	749	$	302	$	—	$	1,051
Equity securities included in other current assets		497		—		—		497
Equity securities included in equity investments		—		—		2,745		2,745
Total	$	1,246	$	302	$	2,745	$	4,293
July 31, 2018
Debt securities	$	1,692	$	3,920	$	—	$	5,612
Equity securities included in other current assets		360		—		—		360
Total	$	2,052	$	3,920	$	—	$	5,972

(1) – quoted prices in active markets for identical assets or liabilities

(2) – observable inputs other than quoted prices in active markets for identical assets and liabilities

(3) – no observable pricing inputs in the market

Summary of assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3)

	Three Months Ended January 31,					Six Months Ended January 31,
	2019			2018		2019			2018
	(in thousands)
Balance, beginning of period	$	2,816		$	6,300	$	—		$	6,300
Transfer into Level 3 from adoption of change in accounting for equity investments		—			—		2,794			—
Total losses recognized in “Other income (expense), net”		(71	)		—		(49	)		—
Balance, end of period	$	2,745		$	6,300	$	2,745		$	6,300
Change in unrealized gains or losses for the period included in earnings for assets held at the end of the period	$	(71	)	$	—	$	(49	)	$	—