Segment Information (Tables)

3 Months Ended

Oct. 31, 2011

Segment Information [Abstract]

Segment profitability allocation methodology

	Three months ended October 31, 2011
	Telecommunications Transmission	RF Microwave Amplifiers	Mobile Data Communications	Unallocated	Total
Net sales	$         56,796,000	21,113,000	35,452,000	-	$   113,361,000
Operating income (loss)	13,034,000	323,000	9,363,000	(6,961,000)	15,759,000
Interest income and other (expense)	6,000	(3,000)	9,000	484,000	496,000
Interest expense	166,000	-	-	1,980,000	2,146,000
Depreciation and amortization	2,567,000	1,103,000	420,000	922,000	5,012,000
Expenditures for long-lived assets, including intangibles	1,271,000	106,000	66,000	-	1,443,000
Total assets at October 31, 2011	256,684,000	99,459,000	29,935,000	467,295,000	853,373,000

	Three months ended October 31, 2010
	Telecommunications Transmission	RF Microwave Amplifiers	Mobile Data Communications	Unallocated	Total
Net sales	$         49,141,000	22,800,000	106,219,000	-	$   178,160,000
Operating income	8,320,000	637,000	25,063,000	6,061,000	40,081,000
Interest income and other	71,000	3,000	12,000	608,000	694,000
Interest expense	81,000	-	-	1,982,000	2,063,000
Depreciation and amortization	2,765,000	1,121,000	872,000	1,575,000	6,333,000
Expenditures for long-lived assets, including intangibles	6,973,000	79,000	357,000	44,000	7,453,000
Total assets at October 31, 2010	257,135,000	100,356,000	60,485,000	610,877,000	1,028,853,000