Segment Information (Tables)

6 Months Ended

Jan. 31, 2015

Segment Reporting [Abstract]

Segment information

Corporate management defines and reviews segment profitability based on the same allocation methodology as presented in the segment data tables below:

	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

	Three months ended January 31, 2014
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications		Unallocated		Total
Net sales	$	56,521,000		22,041,000		6,937,000		—		$	85,499,000
Operating income (loss)	10,268,000			1,077,000		3,273,000		(3,446,000	)	11,172,000
Interest income and other (expense)	(18,000		)	(13,000	)	3,000		256,000		228,000
Interest expense (income)	61,000			—		(3,000	)	1,940,000		1,998,000
Depreciation and amortization	2,231,000			945,000		63,000		1,085,000		4,324,000
Expenditure for long-lived assets, including intangibles	1,981,000			163,000		246,000		7,000		2,397,000
Total assets at January 31, 2014	244,478,000			90,733,000		7,114,000		312,889,000		655,214,000

	Six months ended January 31, 2015
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications	Unallocated		Total
Net sales	$	105,223,000		40,410,000		12,560,000	—		$	158,193,000
Operating income (loss)	19,215,000			2,032,000		5,576,000	(7,981,000	)	18,842,000
Interest income and other (expense)	(55,000		)	(25,000	)	6,000	248,000		174,000
Interest expense	136,000			—		—	198,000		334,000
Depreciation and amortization	4,409,000			1,785,000		142,000	2,413,000		8,749,000
Expenditure for long-lived assets, including intangibles	1,280,000			674,000		144,000	47,000		2,145,000
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, 2014
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications		Unallocated		Total
Net sales	$	110,886,000		42,238,000		15,743,000		—		$	168,867,000
Operating income (loss)	19,197,000			1,668,000		7,379,000		(6,973,000	)	21,271,000
Interest income and other (expense)	(12,000		)	(18,000	)	6,000		525,000		501,000
Interest expense (income)	120,000			—		(3,000	)	3,899,000		4,016,000
Depreciation and amortization	4,490,000			1,888,000		137,000		2,048,000		8,563,000
Expenditure for long-lived assets, including intangibles	2,914,000			257,000		246,000		7,000		3,424,000
Total assets at January 31, 2014	244,478,000			90,733,000		7,114,000		312,889,000		655,214,000