CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
Statements of Operations [Abstract]
Revenues	$ 1,703	$ 4,823
Costs and expenses:
Direct cost of revenues	782	2,108
Selling, general and administrative	1,612	1,103
Total costs and expenses	2,394	3,211
(Loss) income from operations	(691)	1,612
Other income:
Interest income	10	9
Other income		23
Total other income	10	32
(Loss) income before income taxes	(681)	1,644
Provision for income taxes	(6)	(755)
Net (loss) income	(687)	889
Net loss (income) attributable to noncontrolling interests	55	(183)
Net (loss) income attributable to Straight Path Communications Inc.	$ (632)	$ 706
Earnings (loss) per share attributable to Straight Path Communications Inc. stockholders:
Basic (in dollars per share)	$ (0.05)	$ 0.06
Diluted (in dollars per share)	$ (0.05)	$ 0.06
Weighted-average number of shares used in calculation of earnings (loss) per share:
Basic (in shares)	11,810	11,398
Diluted (in shares)	11,810	11,803