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Marketable Securities (Tables)

12 Months Ended

Jul. 31, 2018

Marketable Securities [Abstract]

Summary of marketable securities

(in thousands)		Amortized Cost				Gross Unrealized Gains				Gross Unrealized Losses				Fair Value
July 31, 2018
Available-for-sale securities:
Certificates of deposit*		$	3,032			$	—			$	—			$	3,032
Equity			393				—				(33	)			360
U.S. Treasury notes			1,693				—				(1	)			1,692
Municipal bonds			888				—				—				888
TOTAL		$	6,006			$	—			$	(34	)		$	5,972
July 31, 2017
Available-for-sale securities:
Certificates of deposit*		$	29,011			$	1			$	(7	)		$	29,005
Federal Government Sponsored Enterprise notes			3,992				—				(14	)			3,978
International agency notes			291				—				—				291
Mutual funds			5,353				77				—				5,430
Corporate bonds			4,643				—				—				4,643
Equity			74				—				(26	)			48
U.S. Treasury notes			6,673				—				—				6,673
Municipal bonds			8,201				4				(1	)			8,204
TOTAL		$	58,238			$	82			$	(48	)		$	58,272

*

Each of the Company’s certificates of deposit has a CUSIP, was purchased in the secondary market through a broker and may be sold in the secondary market.

Summary of available-for-sale debt securities

(in thousands)		Fair Value
Within one year		$	5,308
After one year through five years			304
After five years through ten years			—
After ten years			—
TOTAL		$	5,612

Summary of available-for-sale securities, unrealized loss position

(in thousands)		Unrealized Losses				Fair Value
July 31, 2018
Equity		$	33			$	360
U.S. Treasury notes			1				1,692
TOTAL		$	34			$	2,052
July 31, 2017
Certificates of deposit		$	7			$	12,155
Federal Government Sponsored Enterprise notes			14				3,529
Equity			26				48
Municipal bonds			1				3,349
TOTAL		$	48			$	19,081