Components of Purchase Price at Fair Value (Detail) - USD ($)			1 Months Ended	9 Months Ended
	Jun. 02, 2015	Nov. 02, 2014	May. 19, 2015	Jul. 31, 2015
Cash consideration paid				$ 2,100,000
RF Industries, Ltd. common shares issued				200,000
Rel-Tech Electronics, Inc
Cash consideration paid	$ 2,100,000			3,100,000
RF Industries, Ltd. common shares issued	200,000
Earn-out	610,000
Total purchase price	$ 2,910,000
CompPro Product Line
Cash consideration paid			$ 700,000
Total purchase price			$ 700,000
Comnet Telecom Supply Inc
Cash consideration paid		$ 3,090,000
RF Industries, Ltd. common shares issued		1,060,000
Earn-out		1,235,000
Total purchase price		$ 5,385,000		$ 4,150,000