Segment Information (Tables)

3 Months Ended

Oct. 31, 2013

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 October 31, 2013
	Telecommunications Transmission		RF Microwave Amplifiers		Mobile Data Communications	Unallocated		Total
Net sales	$	54,365,000	20,197,000		8,806,000	—		$	83,368,000
Operating income (loss)	8,929,000		591,000		4,106,000	(3,527,000	)	10,099,000
Interest income and other (expense)	6,000		(5,000	)	3,000	269,000		273,000
Interest expense (income)	59,000		—		—	1,959,000		2,018,000
Depreciation and amortization	2,259,000		943,000		74,000	963,000		4,239,000
Expenditure for long-lived assets, including intangibles	933,000		94,000		—	—		1,027,000
Total assets at October 31, 2013	243,851,000		92,774,000		7,236,000	338,714,000		682,575,000

	Three months ended October 31, 2012
	Telecommunications Transmission			RF Microwave Amplifiers		Mobile Data Communications	Unallocated		Total
Net sales	$	53,327,000		25,289,000		12,337,000	—		$	90,953,000
Operating income (loss)	12,259,000			1,718,000		3,471,000	(4,086,000	)	13,362,000
Interest income and other (expense)	(9,000		)	(22,000	)	9,000	298,000		276,000
Interest expense	159,000			—		—	1,952,000		2,111,000
Depreciation and amortization	2,436,000			980,000		152,000	784,000		4,352,000
Expenditure for long-lived assets, including intangibles	841,000			207,000		15,000	—		1,063,000
Total assets at October 31, 2012	233,446,000			95,785,000		8,511,000	367,852,000		705,594,000