Marketable Securities (Tables)

12 Months Ended

Jul. 31, 2016

Marketable Securities [Abstract]

Summary of marketable securities

(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
July 31, 2016
Available-for-sale securities:
Certificates of deposit*	$	17,690	$	6	$	—		$	17,696
Federal Government Sponsored Enterprise notes		3,457		17		—			3,474
International agency notes		409		5		—			414
Mutual funds		5,121		—		(39	)		5,082
Corporate bonds		3,633		40		—			3,673
Equity		2,463		—		(140	)		2,323
U.S. Treasury notes		4,946		95		(1	)		5,040
Municipal bonds		15,222		26		(1	)		15,247
TOTAL	$	52,941	$	189	$	(181	)	$	52,949
July 31, 2015
Available-for-sale securities:
Certificates of deposit*	$	22,736	$	3	$	(2	)	$	22,737
Federal Home Loan Bank bonds		795		—		—			795
International agency notes		1,120		—		(1	)		1,119
Mutual funds		5,000		—		(18	)		4,982
Straight Path Communications Inc. common stock		2,086		—		(563	)		1,523
Municipal bonds		9,125		9		(3	)		9,131
TOTAL	$	40,862	$	12	$	(587	)	$	40,287

* 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 securities

(in thousands)	Fair Value
Within one year	$	22,701
After one year through five years		19,081
After five years through ten years		3,049
After ten years		713
TOTAL	$	45,544

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

(in thousands)	Unrealized Losses		Fair  Value
July 31, 2016
Mutual funds	$	39	$	5,082
Equity		140		2,323
U.S. Treasury notes		1		199
Municipal bonds		1		3,112
TOTAL	$	181	$	10,716
July 31, 2015
Certificates of deposit	$	2	$	2,194
International agency notes		1		1,119
Mutual funds		18		4,982
Straight Path Communications Inc. common stock		563		1,523
Municipal bonds		3		3,466
TOTAL	$	587	$	13,284