Segment Information (Details)
|
|
3 Months Ended |
6 Months Ended |
|
|
Feb. 23, 2016
operating_segment
|
Jan. 31, 2016
USD ($)
operating_segment
|
Jan. 31, 2015
USD ($)
|
Jan. 31, 2016
USD ($)
operating_segment
|
Jan. 31, 2015
USD ($)
|
Jul. 31, 2015
USD ($)
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Number of reportable operating segments | operating_segment |
|
3
|
|
3
|
|
|
| Net sales |
|
$ 70,323,000
|
$ 81,802,000
|
$ 134,440,000
|
$ 158,193,000
|
|
| Operating income (loss) |
|
3,189,000
|
10,623,000
|
5,357,000
|
18,842,000
|
|
| Interest income and other (expense) |
|
110,000
|
90,000
|
222,000
|
174,000
|
|
| Interest expense (income) |
|
73,000
|
69,000
|
148,000
|
334,000
|
|
| Depreciation and amortization |
|
3,736,000
|
4,243,000
|
7,693,000
|
8,749,000
|
|
| Expenditure for long-lived assets, including intangibles |
|
827,000
|
1,398,000
|
1,463,000
|
2,145,000
|
|
| Total assets |
|
462,170,000
|
471,487,000
|
462,170,000
|
471,487,000
|
$ 473,877,000
|
| Amortization of stock-based compensation |
|
1,074,000
|
1,061,000
|
2,125,000
|
2,398,000
|
|
| Transaction costs, acquisition of TCS |
|
2,337,000
|
0
|
3,729,000
|
0
|
|
| Telecommunications Transmission Segment |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Net sales |
|
38,544,000
|
53,867,000
|
73,793,000
|
105,223,000
|
|
| Operating income (loss) |
|
4,803,000
|
11,049,000
|
7,164,000
|
19,215,000
|
|
| Interest income and other (expense) |
|
(15,000)
|
(26,000)
|
(32,000)
|
(55,000)
|
|
| Interest expense (income) |
|
73,000
|
69,000
|
148,000
|
136,000
|
|
| Depreciation and amortization |
|
1,715,000
|
2,196,000
|
3,658,000
|
4,409,000
|
|
| Expenditure for long-lived assets, including intangibles |
|
777,000
|
742,000
|
1,247,000
|
1,280,000
|
|
| Total assets |
|
212,211,000
|
240,413,000
|
212,211,000
|
240,413,000
|
|
| RF Microwave Amplifiers Segment |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Net sales |
|
24,933,000
|
21,646,000
|
47,587,000
|
40,410,000
|
|
| Operating income (loss) |
|
1,382,000
|
969,000
|
3,350,000
|
2,032,000
|
|
| Interest income and other (expense) |
|
(7,000)
|
(7,000)
|
(7,000)
|
(25,000)
|
|
| Interest expense (income) |
|
0
|
0
|
0
|
0
|
|
| Depreciation and amortization |
|
860,000
|
906,000
|
1,734,000
|
1,785,000
|
|
| Expenditure for long-lived assets, including intangibles |
|
29,000
|
582,000
|
171,000
|
674,000
|
|
| Total assets |
|
87,070,000
|
92,918,000
|
87,070,000
|
92,918,000
|
|
| Mobile Data Communication Segment |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Net sales |
|
6,846,000
|
6,289,000
|
13,060,000
|
12,560,000
|
|
| Operating income (loss) |
|
3,735,000
|
2,709,000
|
6,734,000
|
5,576,000
|
|
| Interest income and other (expense) |
|
2,000
|
3,000
|
5,000
|
6,000
|
|
| Interest expense (income) |
|
0
|
0
|
0
|
0
|
|
| Depreciation and amortization |
|
79,000
|
72,000
|
160,000
|
142,000
|
|
| Expenditure for long-lived assets, including intangibles |
|
8,000
|
60,000
|
30,000
|
144,000
|
|
| Total assets |
|
6,415,000
|
6,002,000
|
6,415,000
|
6,002,000
|
|
| Unallocated |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Net sales |
|
0
|
0
|
0
|
0
|
|
| Operating income (loss) |
|
(6,731,000)
|
(4,104,000)
|
(11,891,000)
|
(7,981,000)
|
|
| Interest income and other (expense) |
|
130,000
|
120,000
|
256,000
|
248,000
|
|
| Interest expense (income) |
|
0
|
0
|
0
|
198,000
|
|
| Depreciation and amortization |
|
1,082,000
|
1,069,000
|
2,141,000
|
2,413,000
|
|
| Expenditure for long-lived assets, including intangibles |
|
13,000
|
14,000
|
15,000
|
47,000
|
|
| Total assets |
|
156,474,000
|
132,154,000
|
156,474,000
|
132,154,000
|
|
| Amortization of stock-based compensation |
|
1,074,000
|
1,061,000
|
2,125,000
|
2,398,000
|
|
| Transaction costs, acquisition of TCS |
|
2,337,000
|
|
3,729,000
|
|
|
| Expenses related to strategic alternatives analysis |
|
|
0
|
|
585,000
|
|
| Telecommunications Transmission Sales to RF Microwave Amplifiers |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Intersegment sales |
|
652,000
|
720,000
|
1,305,000
|
1,009,000
|
|
| Telecommunications Transmissions Sales to Mobile Data Communications |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Intersegment sales |
|
87,000
|
141,000
|
108,000
|
337,000
|
|
| Rf Microwave Amplifiers Sales To Telecommunications Transmission |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Intersegment sales |
|
$ 13,000
|
0
|
$ 32,000
|
0
|
|
| Committed Secured Revolving Credit Facility |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Line of Credit Facility, maximum borrowing capacity |
|
|
$ 100,000,000
|
|
$ 100,000,000
|
|
| Subsequent Event |
|
|
|
|
|
|
| Segment Reporting Information [Line Items] |
|
|
|
|
|
|
| Number of reportable operating segments | operating_segment |
2
|
|
|
|
|
|