Segment Information (Tables)

6 Months Ended

Jan. 31, 2016

Segment Reporting [Abstract]

Segment information

Segment information is presented in the tables below:

	Three months ended January 31, 2016
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications	Unallocated		Total
Net sales	$	38,544,000		24,933,000		6,846,000	—		$	70,323,000
Operating income (loss)	4,803,000			1,382,000		3,735,000	(6,731,000	)	3,189,000
Interest income and other (expense)	(15,000		)	(7,000	)	2,000	130,000		110,000
Interest expense	73,000			—		—	—		73,000
Depreciation and amortization	1,715,000			860,000		79,000	1,082,000		3,736,000
Expenditure for long-lived assets, including intangibles	777,000			29,000		8,000	13,000		827,000
Total assets at January 31, 2016	212,211,000			87,070,000		6,415,000	156,474,000		462,170,000

	Three months ended January 31, 2015
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications	Unallocated		Total
Net sales	$	53,867,000		21,646,000		6,289,000	—		$	81,802,000
Operating income (loss)	11,049,000			969,000		2,709,000	(4,104,000	)	10,623,000
Interest income and other (expense)	(26,000		)	(7,000	)	3,000	120,000		90,000
Interest expense	69,000			—		—	—		69,000
Depreciation and amortization	2,196,000			906,000		72,000	1,069,000		4,243,000
Expenditure for long-lived assets, including intangibles	742,000			582,000		60,000	14,000		1,398,000
Total assets at January 31, 2015	240,413,000			92,918,000		6,002,000	132,154,000		471,487,000

	Six months ended January 31, 2016
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications	Unallocated		Total
Net sales	$	73,793,000		47,587,000		13,060,000	—		$	134,440,000
Operating income (loss)	7,164,000			3,350,000		6,734,000	(11,891,000	)	5,357,000
Interest income and other (expense)	(32,000		)	(7,000	)	5,000	256,000		222,000
Interest expense	148,000			—		—	—		148,000
Depreciation and amortization	3,658,000			1,734,000		160,000	2,141,000		7,693,000
Expenditure for long-lived assets, including intangibles	1,247,000			171,000		30,000	15,000		1,463,000
Total assets at January 31, 2016	212,211,000			87,070,000		6,415,000	156,474,000		462,170,000