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Income Taxes (Tables)
12 Months Ended
Apr. 29, 2017
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 29,
2017
 
April 30,
2016
 
May 2,
2015
Domestic
$
16,010

 
$
3,264

 
$
29,194

Foreign
(422
)
 
(138
)
 
2,489

Income before income taxes
$
15,588

 
$
3,126

 
$
31,683

Schedule of Components of Income Tax Expense
Income tax expense consisted of the following:
 
Year Ended
 
April 29,
2017
 
April 30,
2016
 
May 2,
2015
Current:
 
 
 
 
 
Federal
$
5,268

 
$
(467
)
 
$
6,657

State
1,158

 
123

 
1,150

Foreign
863

 
557

 
848

Deferred:
 
 
 
 
 
Federal
(1,625
)
 
463

 
1,906

State
(397
)
 
(89
)
 
307

Foreign
(21
)
 
478

 
(67
)
 
$
5,246

 
$
1,065

 
$
10,801

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 29,
2017
 
April 30,
2016
 
May 2,
2015
Computed income tax expense at federal, state and local jurisdiction statutory rates
 
$
5,456

 
$
1,063

 
$
11,089

State taxes, net of federal benefit
 
539

 
40

 
1,016

Research and development tax credit
 
(1,573
)
 
(2,015
)
 
(1,292
)
Meals and entertainment
 
299

 
334

 
369

Stock compensation
 
497

 
525

 
566

Dividends paid to retirement plan
 
(293
)
 
(323
)
 
(352
)
Domestic production activities deduction
 
(542
)
 
(91
)
 
(529
)
Change in valuation allowances
 
388

 
1,265

 
(2,295
)
Change in uncertain tax positions
 
97

 
125

 
2,357

Other, net
 
378

 
142

 
(128
)
 
 
$
5,246

 
$
1,065

 
$
10,801

Schedule of Deferred Tax Assets and Liabilities
The components of the net deferred tax asset were as follows:
 
April 29,
2017
 
April 30,
2016
Deferred tax assets:
 
 
 
Accrued warranty obligations
$
10,469

 
$
11,407

Vacation accrual
2,100

 
1,963

Net losses on investments

 
336

Deferred maintenance revenue
1,336

 
341

Allowance for excess and obsolete inventory
1,254

 
1,314

Equity compensation
848

 
745

Allowance for doubtful accounts
677

 
703

Inventory capitalization
354

 
595

Accrued compensation and benefits
1,232

 
1,015

Unrealized loss on foreign currency exchange
226

 

Net operating loss carry forwards
1,772

 
1,404

Research and development tax credit carry forwards
311

 
1,005

Other
1,266

 
617

 
21,845

 
21,445

Valuation allowance
(2,061
)
 
(1,673
)
 
19,784

 
19,772

 
 
 
 
Deferred tax liabilities:
 

 
 

Property and equipment
(6,762
)
 
(7,988
)
Prepaid expenses
(601
)
 
(631
)
Intangible assets
(1,809
)
 
(1,479
)
Unrealized gain on foreign currency exchange

 
(931
)
Other
(156
)
 
(60
)
 
(9,328
)
 
(11,089
)
 
$
10,456

 
$
8,683

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 29,
2017
 
April 30,
2016
Non-current assets
$
11,292

 
$
9,437

Non-current liabilities
(836
)
 
(754
)
 
$
10,456

 
$
8,683

Reconciliation of Unrecognized Tax Benefits
The changes in the amounts recorded for uncertain tax positions are:
 
April 29, 2017
April 30, 2016
May 2, 2015
Balance at beginning of year
$
3,016

$
2,891

$
494

Gross increases related to prior period tax positions
235

137

6

Gross increases related to current period tax positions

8

2,496

Lapse of statute of limitations
(138
)
(20
)
(105
)
Balance at end of year
$
3,113

$
3,016

$
2,891