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Income Taxes (Tables)
12 Months Ended
Apr. 30, 2016
Income Tax Disclosure [Abstract]  
Schedule of Pretax Income Domestic and Foreign
The pretax income attributable to domestic and foreign operations was as follows:
 
Year Ended
 
April 30,
2016
 
May 2,
2015
 
April 26,
2014
Domestic
$
3,264

 
$
29,194

 
$
35,699

Foreign
(138
)
 
2,489

 
1,542

Income before income taxes
$
3,126

 
$
31,683

 
$
37,241

Schedule of Components of Income Tax Expense
Income tax expense consisted of the following:
 
Year Ended
 
April 30,
2016
 
May 2,
2015
 
April 26,
2014
Current:
 
 
 
 
 
Federal
$
(467
)
 
$
6,657

 
$
11,342

State
123

 
1,150

 
1,454

Foreign
557

 
848

 
696

Deferred:
 
 
 
 
 
Federal
463

 
1,906

 
1,241

State
(89
)
 
307

 
667

Foreign
478

 
(67
)
 
(365
)
 
$
1,065

 
$
10,801

 
$
15,035

Schedule of Effective Income Tax Rate Reconciliation
A reconciliation of the provision for income taxes and the amount computed by applying the federal statutory rate to income before income taxes is as follows:
 
 
Year Ended
 
 
April 30,
2016
 
May 2,
2015
 
April 26,
2014
Computed income tax expense at federal, state and local jurisdiction statutory rates
 
$
1,063

 
$
11,089

 
$
13,035

State taxes, net of federal benefit
 
40

 
1,016

 
1,433

Research and development tax credit
 
(2,015
)
 
(1,292
)
 
(750
)
Meals and entertainment
 
334

 
369

 
344

Stock compensation
 
525

 
566

 
586

Dividends paid to retirement plan
 
(323
)
 
(352
)
 
(328
)
Domestic production activities deduction
 
(91
)
 
(529
)
 
(1,012
)
Change in valuation allowances
 
1,265

 
(2,295
)
 
2,301

Change in uncertain tax positions
 
125

 
2,357

 
111

Other, net
 
142

 
(128
)
 
(685
)
 
 
$
1,065

 
$
10,801

 
$
15,035

Schedule of Deferred Tax Assets and Liabilities
The components of the net deferred tax asset were as follows:
 
April 30,
2016
 
May 2,
2015
Deferred tax assets:
 
 
 
Accrued warranty obligations
$
11,407

 
$
10,038

Vacation accrual
1,963

 
1,808

Net losses on investments
336

 

Deferred maintenance revenue
341

 
745

Allowance for excess and obsolete inventory
1,314

 
939

Equity compensation
745

 
828

Allowance for doubtful accounts
703

 
613

Inventory capitalization
595

 
531

Accrued compensation and benefits
1,015

 
1,124

Unrealized loss on foreign currency exchange

 
554

Net operating loss carry forwards
1,404

 
791

Research and development tax credit carry forwards
1,005

 

Other
617

 
344

 
21,445

 
18,315

Valuation allowance
(1,673
)
 
(52
)
 
19,772

 
18,263

 
 
 
 
Deferred tax liabilities:
 

 
 

Property and equipment
(7,988
)
 
(7,249
)
Prepaid expenses
(631
)
 
(577
)
Intangible assets
(1,479
)
 

Unrealized gain on foreign currency exchange
(931
)
 

Other
(60
)
 
(34
)
 
(11,089
)
 
(7,860
)
 
$
8,683

 
$
10,403

Schedule of Deferred Tax Assets and Liabilities Current and Non Current
The classification of net deferred tax assets in the accompanying consolidated balance sheets is:
 
April 30,
2016
 
May 2,
2015
Current assets
$

 
$
10,640

Current liabilities

 

Non-current assets
9,437

 
702

Non-current liabilities
(754
)
 
(939
)
 
$
8,683

 
$
10,403

Reconciliation of Unrecognized Tax Benefits
The changes in the amounts recorded for uncertain tax positions are:
 
April 30, 2016
May 2, 2015
April 26, 2014
Balance at beginning of year
$
2,891

$
494

$
379

Gross increases related to prior period tax positions
137

6

16

Gross decreases related to prior period tax positions



Gross increases related to current period tax positions
8

2,496

99

Lapse of statute of limitations
(20
)
(105
)

Balance at end of year
$
3,016

$
2,891

$
494