| Segment information | 
Segment information for the six months ended September 30, 2016, and 2015, is set forth below: 
 
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   | 
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Three months ended September 30, 2016  | 
   | 
 
(in thousands)  | 
   | 
IBW  | 
   | 
ISMS  | 
   | 
CNS  | 
   | 
Total  | 
   | 
 
Revenue  | 
   | 
$  | 
6,644  | 
 
  | 
   | 
$  | 
5,109  | 
 
  | 
   | 
$  | 
6,027  | 
 
  | 
   | 
$  | 
17,780  | 
 
  | 
   | 
 
Cost of revenue  | 
   | 
4,411  | 
 
  | 
(1)   | 
2,702  | 
 
  | 
   | 
4,300  | 
 
  | 
   | 
11,413  | 
 
  | 
   | 
 
Gross profit  | 
   | 
2,233  | 
 
  | 
   | 
2,407  | 
 
  | 
   | 
1,727  | 
 
  | 
   | 
6,367  | 
 
  | 
   | 
 
Gross margin  | 
   | 
33.6  | 
%  | 
   | 
47.1  | 
%  | 
   | 
28.7  | 
%  | 
   | 
35.8  | 
%  | 
   | 
 
Research and development  | 
   | 
1,594  | 
 
  | 
   | 
1,237  | 
 
  | 
   | 
496  | 
 
  | 
   | 
3,327  | 
 
  | 
   | 
 
Segment profit (loss)  | 
   | 
$  | 
639  | 
 
  | 
   | 
$  | 
1,170  | 
 
  | 
   | 
$  | 
1,231  | 
 
  | 
   | 
3,040  | 
 
  | 
   | 
 
Operating expenses:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
Sales and marketing  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,896  | 
 
  | 
   | 
 
General and administrative  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,218  | 
 
  | 
   | 
 
Intangible amortization  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
1,201  | 
 
  | 
   | 
 
Restructuring  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,601  | 
 
  | 
   | 
 
Operating profit (loss)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(5,876  | 
)  | 
   | 
 
Other income (expense), net  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
74  | 
 
  | 
   | 
 
Income tax benefit (expense)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(8  | 
)  | 
   | 
 
Net income (loss) from continuing operations  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
$  | 
(5,810  | 
)  | 
   | 
 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
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   | 
   | 
Three months ended September 30, 2015  | 
   | 
 
(in thousands)  | 
   | 
IBW  | 
   | 
ISMS  | 
   | 
CNS  | 
   | 
Total  | 
   | 
 
Revenue  | 
   | 
$  | 
10,819  | 
 
  | 
   | 
$  | 
5,886  | 
 
  | 
   | 
$  | 
8,809  | 
 
  | 
   | 
$  | 
25,514  | 
 
  | 
   | 
 
Cost of revenue  | 
   | 
6,272  | 
 
  | 
   | 
2,722  | 
 
  | 
   | 
6,289  | 
 
  | 
   | 
15,283  | 
 
  | 
   | 
 
Gross profit  | 
   | 
4,547  | 
 
  | 
   | 
3,164  | 
 
  | 
   | 
2,520  | 
 
  | 
   | 
10,231  | 
 
  | 
   | 
 
Gross margin  | 
   | 
42.0  | 
%  | 
   | 
53.8  | 
%  | 
   | 
28.6  | 
%  | 
   | 
40.1  | 
%  | 
   | 
 
Research and development  | 
   | 
2,775  | 
 
  | 
   | 
1,302  | 
 
  | 
   | 
548  | 
 
  | 
   | 
4,625  | 
 
  | 
   | 
 
Segment profit (loss)  | 
   | 
$  | 
1,772  | 
 
  | 
   | 
$  | 
1,862  | 
 
  | 
   | 
$  | 
1,972  | 
 
  | 
   | 
5,606  | 
 
  | 
   | 
 
Operating expenses:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
Sales and marketing  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
4,113  | 
 
  | 
   | 
 
General and administrative  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,493  | 
 
  | 
   | 
 
Intangible amortization  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
1,432  | 
 
  | 
   | 
 
Operating profit (loss)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(2,432  | 
)  | 
   | 
 
Other income (expense), net  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(61  | 
)  | 
   | 
 
Income tax benefit (expense)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
20  | 
 
  | 
   | 
 
Net income (loss) from continuing operations  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
$  | 
(2,473  | 
)  | 
   | 
 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
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   | 
   | 
   | 
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   | 
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   | 
   | 
Six months ended September 30, 2016  | 
   | 
 
(in thousands)  | 
   | 
IBW  | 
   | 
ISMS  | 
   | 
CNS  | 
   | 
Total  | 
   | 
 
Revenue  | 
   | 
$  | 
12,765  | 
 
  | 
   | 
$  | 
9,248  | 
 
  | 
   | 
$  | 
10,583  | 
 
  | 
   | 
$  | 
32,596  | 
 
  | 
   | 
 
Cost of revenue  | 
   | 
9,538  | 
 
  | 
(1)   | 
4,822  | 
 
  | 
   | 
7,304  | 
 
  | 
   | 
21,664  | 
 
  | 
(1)   | 
 
Gross profit  | 
   | 
3,227  | 
 
  | 
   | 
4,426  | 
 
  | 
   | 
3,279  | 
 
  | 
   | 
10,932  | 
 
  | 
   | 
 
Gross margin  | 
   | 
25.3  | 
%  | 
   | 
47.9  | 
%  | 
   | 
31.0  | 
%  | 
   | 
33.5  | 
%  | 
   | 
 
Research and development  | 
   | 
3,958  | 
 
  | 
   | 
2,531  | 
 
  | 
   | 
1,115  | 
 
  | 
   | 
7,604  | 
 
  | 
   | 
 
Segment profit (loss)  | 
   | 
$  | 
(731  | 
)  | 
   | 
$  | 
1,895  | 
 
  | 
   | 
$  | 
2,164  | 
 
  | 
   | 
3,328  | 
 
  | 
   | 
 
Operating expenses:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
Sales and marketing  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
6,277  | 
 
  | 
   | 
 
General and administrative  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
4,563  | 
 
  | 
   | 
 
Intangible amortization  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,401  | 
 
  | 
   | 
 
Restructuring  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,565  | 
 
  | 
   | 
 
Long-lived assets impairment  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
1,181  | 
 
  | 
   | 
 
Operating profit (loss)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(13,659  | 
)  | 
   | 
 
Other income (expense), net  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
91  | 
 
  | 
   | 
 
Income tax benefit (expense)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(10  | 
)  | 
   | 
 
Net income (loss) from continuing operations  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
$  | 
(13,578  | 
)  | 
   | 
 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
   | 
   | 
Six months ended September 30, 2015  | 
   | 
 
(in thousands)  | 
   | 
IBW  | 
   | 
ISMS  | 
   | 
CNS  | 
   | 
Total  | 
   | 
 
Revenue  | 
   | 
$  | 
19,889  | 
 
  | 
   | 
$  | 
10,391  | 
 
  | 
   | 
$  | 
16,804  | 
 
  | 
   | 
$  | 
47,084  | 
 
  | 
   | 
 
Cost of revenue  | 
   | 
11,341  | 
 
  | 
   | 
5,016  | 
 
  | 
   | 
12,067  | 
 
  | 
   | 
28,424  | 
 
  | 
   | 
 
Gross profit  | 
   | 
8,548  | 
 
  | 
   | 
5,375  | 
 
  | 
   | 
4,737  | 
 
  | 
   | 
18,660  | 
 
  | 
   | 
 
Gross margin  | 
   | 
43.0  | 
%  | 
 
  | 
51.7  | 
%  | 
   | 
28.2  | 
%  | 
   | 
39.6  | 
%  | 
   | 
 
Research and development  | 
   | 
5,937  | 
 
  | 
   | 
2,583  | 
 
  | 
   | 
1,191  | 
 
  | 
   | 
9,711  | 
 
  | 
   | 
 
Segment profit (loss)  | 
   | 
$  | 
2,611  | 
 
  | 
   | 
$  | 
2,792  | 
 
  | 
   | 
$  | 
3,546  | 
 
  | 
   | 
8,949  | 
 
  | 
   | 
 
Operating expenses:  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
 
Sales and marketing  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
7,309  | 
 
  | 
   | 
 
General and administrative  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
5,462  | 
 
  | 
   | 
 
Intangible amortization  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
2,831  | 
 
  | 
   | 
 
Restructuring  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
17  | 
 
  | 
   | 
 
Operating profit (loss)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(6,670  | 
)  | 
   | 
 
Other income (expense), net  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
(23  | 
)  | 
   | 
 
Income tax benefit (expense)  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
82  | 
 
  | 
   | 
 
Net income (loss) from continuing operations  | 
   | 
   | 
   | 
   | 
   | 
   | 
   | 
$  | 
(6,611  | 
)  | 
   | 
 
  
 
 
  
(1)  The three and six months ended September 30, 2016, includes E&O expense for ClearLink DAS inventory and pipeline inventory.  See Note 2, Restructuring Charges.
 
 
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