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Income Taxes (Tables)
 12 Months Ended
Mar. 28, 2015
Mar. 29, 2014
Income Tax Disclosure [Abstract]    
Components of net deferred tax assets
Net deferred tax assets and liabilities at March 28, 2015 and March 29, 2014 consisted of the following:
(In thousands)
2015
 
2014
Deferred tax assets and liabilities:
 
 
 
Current
 
 
 
Inventory valuation and warranty costs
$
10,781

 
$
13,650

Receivables and other current assets
(272
)
 
(311
)
Payroll-related accruals
1,288

 
1,594

Accrued liabilities
2,382

 
926

Deferred revenue
3,368

 
2,900

Other
1,029

 
(161
)
Total current deferred tax assets
18,576

 
18,598

Valuation allowance, current
(18,571
)
 
(18,607
)
Net current deferred tax assets (liabilities)
$
5

 
$
(9
)
Non-current
 
 
 
Deferred compensation
$
4,704

 
$
6,482

Intangible assets and investments
(1,677
)
 
2,446

Accrued liabilities
454

 
186

Property, plant and equipment
5,187

 
4,634

Other comprehensive income
(112
)
 
(253
)
Tax loss and credit carryforwards
59,137

 
42,324

Other assets
1,049

 
1,473

Total non-current deferred tax assets
68,742

 
57,292

Valuation allowance, non-current
(69,011
)
 
(56,588
)
Net non-current deferred tax (liabilities) assets
$
(269
)
 
$
704

Total deferred tax assets
$
87,318

 
$
75,890

Total valuation allowance
(87,582
)
 
(75,195
)
Net deferred tax (liabilities) assets
$
(264
)
 
$
695

  
Breakdown of net operating loss carryforwards and tax credits
The Company had approximately $68.5 million and $49.7 million in tax assets resulting from federal, state and foreign net operating losses and tax credits as of March 28, 2015 and March 29, 2014, respectively as follows:

(In thousands)
2015
 
2014
Federal net operating losses
$
19,785

 
$
7,691

State net operating losses
3,467

 
3,100

Foreign operating losses and tax credits
11,433

 
11,527

Federal research credits
19,670

 
18,332

State research credits
4,287

 
3,953

Federal minimum tax credit
1,049

 
1,106

Federal capital losses
8,855

 
4,024

 
$
68,546

 
$
49,733

  
Components of income tax expense and provision for income taxes
The components of income before income taxes and the (benefit from) provision for income taxes, all from continuing operations, were as follows:
(In thousands)
2015
 
2014
 
2013
Loss before income taxes:
 
 
 
 
 
Domestic
$
(39,656
)
 
$
(37,739
)
 
$
(16,935
)
Foreign
(3,921
)
 
(687
)
 
2,070

Total loss before income taxes
$
(43,577
)
 
$
(38,426
)
 
$
(14,865
)
Provision for (benefit from) income taxes:
 
 
 
 
 
Current:
 
 
 
 
 
U.S. federal and state
$
(983
)
 
$
(605
)
 
$
(2,978
)
Foreign
1,205

 
437

 
1,767

 
222

 
(168
)
 
(1,211
)
Deferred:
 
 
 
 
 
U.S. federal and state
5

 
(26
)
 
40,055

Foreign
7

 
102

 
1,007

 
12

 
76

 
41,062

Total provision for (benefit from) income taxes
$
234

 
$
(92
)
 
$
39,851

  
Reconciliation of effective tax rate  
A reconciliation of the Company’s effective tax rate to the United States federal statutory income tax rate was as follows:
 
2015
 
2014
 
2013
U.S. federal statutory income tax rate
35.0
 %
 
35.0
 %
 
35.0
 %
State income taxes, net of federal benefit
(1.1
)
 
(0.6
)
 
1.1

Tax credits
4.2

 
3.0

 
11.3

Domestic production and export tax incentives
—

 
—

 
3.7

Non-U.S. income taxed at different rates
2.1

 
3.3

 
8.4

Changes in unrecognized tax benefits
(2.4
)
 
2.1

 
3.6

Change in valuation allowance
(32.3
)
 
(38.0
)
 
(327.2
)
Stock compensation
(4.2
)
 
(4.1
)
 
(3.6
)
Other, net
(2.0
)
 
(0.5
)
 
(0.4
)
 
(0.7
)%
 
0.2
 %
 
(268.1
)%
Tax years subject to examination
As of March 28, 2015, the following tax years remained subject to examination by the major tax jurisdictions indicated:
Major Jurisdictions
Open Tax Years
Canada
2011 and forward
China
2005 and forward
France
2012 and forward
Japan
2008 and forward
Korea
2010 and forward
Singapore
2011 and forward
Taiwan
2010 and forward
United Kingdom
2011 and forward
United States
2004 and forward
  
Rollforward of unrecognized income tax benefits
A reconciliation of the beginning and ending amount of the consolidated liability for unrecognized income tax benefits for the years ended March 28, 2015 and March 29, 2014 was as follows:
(In thousands)
2015
 
2014
Beginning unrecognized tax benefits balance
$
9,356

 
$
9,210

Gross increases for tax positions of prior years
849

 
44

Gross decreases for tax positions of prior years
(1,013
)
 
—

Gross increases for tax positions for current year
462

 
102

Ending unrecognized tax benefits balance
$
9,654

 
$
9,356