Segment Information (Tables)

12 Months Ended

Jul. 31, 2011

Jul. 31, 2010

Jul. 31, 2009

Segment Information [Abstract]

Segment profitability allocation methodology

	Fiscal Year Ended July 31, 2011
	Telecommunications Transmission	RF Microwave Amplifiers	Mobile Data Communications	Unallocated	Total
Net sales	$   231,957,000	91,973,000	288,449,000	-	$  612,379,000
Operating income (loss)	49,913,000	1,063,000	64,945,000	(8,123,000)	107,798,000
Interest income and other (expense)	89,000	(8,000)	43,000	2,297,000	2,421,000
Interest expense	562,000	-	10,000	7,843,000	8,415,000
Depreciation and amortization	11,241,000	4,576,000	6,282,000	5,602,000	27,701,000
Expenditure for long-lived assets, including intangibles	10,607,000	1,069,000	922,000	43,000	12,641,000
Total assets at July 31, 2011	252,839,000	98,261,000	31,265,000	555,144,000	937,509,000

	Fiscal Year Ended July 31, 2010
	Telecommunications Transmission	RF Microwave Amplifiers	Mobile Data Communications	Unallocated	Total
Net sales	$   219,701,000	111,959,000	446,545,000	-	$  778,205,000
Operating income (loss)	47,493,000	9,808,000	75,506,000	(28,827,000)	103,980,000
Interest income and other	73,000	15,000	47,000	1,075,000	1,210,000
Interest expense	171,000	-	-	7,717,000	7,888,000
Depreciation and amortization	10,821,000	4,630,000	3,403,000	8,929,000	27,783,000
Expenditure for long-lived assets, including intangibles	3,490,000	1,288,000	3,887,000	200,000	8,865,000
Total assets at July 31, 2010	253,212,000	101,290,000	105,698,000	606,362,000	1,066,562,000

	Fiscal Year Ended July 31, 2009
	Telecommunications Transmission	RF Microwave Amplifiers	Mobile Data Communications	Unallocated	Total
Net sales	$   254,266,000	155,099,000	177,007,000	-	$  586,372,000
Operating income (loss)	55,489,000	14,266,000	31,348,000	(24,176,000)	76,927,000
Interest income and other	104,000	68,000	1,000	2,565,000	2,738,000
Interest expense	141,000	-	-	6,255,000	6,396,000
Depreciation and amortization	15,684,000	8,567,000	3,352,000	9,789,000	37,392,000
Expenditure for long-lived assets, including intangibles	133,955,000	52,282,000	10,923,000	78,000	197,238,000
Total assets at July 31, 2009	270,596,000	112,709,000	53,105,000	502,261,000	938,671,000