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Intangible Assets and Goodwill (Tables)
 12 Months Ended
May. 02, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill Rollforward
The following table shows the roll-forward of goodwill.
 
 
Interface
 
Power
Products
 
Total
Balance as of April 28, 2012
$
11.1

 
$
5.3

 
$
16.4

 
 
 
 
 
 
Impairment
—

 
(4.3
)
 
(4.3
)
 Acquisitions
0.8

 
—

 
0.8

Foreign currency translation
—

 
—

 
—

Balance as of April 27, 2013
11.9

 
1.0

 
12.9

 
 
 
 
 
 
Impairment
—

 
—

 
—

Acquisitions
—

 
—

 
—

Foreign currency translation
0.1

 
—

 
0.1

Balance as of May 3, 2014
12.0

 
1.0

 
13.0

 
 
 
 
 
 
Impairment
(11.1
)
 
—

 
(11.1
)
Foreign currency translation
(0.2
)
 
—

 
(0.2
)
Balance as of May 2, 2015
$
0.7

 
$
1.0

 
$
1.7
Schedule of Identifiable Intangible Assets
The following tables present details of our remaining identifiable intangible assets:
 
 
As of May 2, 2015
 
Gross
 
Accumulated
Amortization
 
Net
 
Wtd. Avg. Remaining
Amortization
Periods (Years)
Customer relationships and agreements
$
16.3

 
$
15.0

 
$
1.3

 
8.8
Trade names, patents and technology licenses
25.8

 
15.8

 
10.0

 
3.3
Covenants not to compete
0.1

 
0.1

 
—

 
2.4
Total
$
42.2

 
$
30.9

 
$
11.3

 
 
 
 
As of May 3, 2014
 
Gross
 
Accumulated
Amortization
 
Net
 
Wtd. Avg. Remaining
Amortization
Periods (Years)
Customer relationships and agreements
$
16.6

 
$
14.7

 
$
1.9

 
9.9
Trade names, patents and technology licenses
25.8

 
14.8

 
11.0

 
9.8
Covenants not to compete
0.1

 
—

 
0.1

 
3.4
Total
$
42.5

 
$
29.5

 
$
13.0

 
 
Schedule of Estimated Aggregate Amortization Expense
The estimated aggregate amortization expense for each of the five succeeding fiscal years is as follows:
 
2016

$
2.4

2017

$
2.3

2018

$
2.2

2019

$
2.1

2020

$
0.2