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Revision of Prior Period Financial Statements
 6 Months Ended
Sep. 30, 2012
Accounting Changes and Error Corrections [Abstract]  
Revision of Prior Period Financial Statements
Revision of Prior Period Financial Statements
During the third quarter of fiscal 2012, the Company identified errors primarily related to retention bonuses associated with its plan to close its Oregon manufacturing facility. In addition, the Company had corrected prior period errors in the first and second quarters of 2012 related to retention bonuses for certain key employees and accounts payable system related issues. The Company assessed the materiality of these errors individually and in the aggregate on prior periods’ financial statements in accordance with the SEC’s Staff Accounting Bulletin No. 99 (SAB 99), and concluded that the errors were not material to any of its prior annual or interim financial statements. Further although the Company also concluded that correcting the errors, on a cumulative basis, would not be material to the expected results of operations for the year ended April 1, 2012, the Company elected to revise its previously issued financial statements as permitted in SEC’s Staff Accounting Bulletin No. 108 (SAB 108) regarding immaterial revisions. The Company also elected to revise its previously issued consolidated financial statements the next time they are filed. As each subsequent filing is made in the future, the previous period consolidated financial statements affected by the errors will be revised. The Company has revised the consolidated statements of operations for the three and six months ended October 2, 2011 included herein to reflect the correct balances. The revision had no impact on the Company’s total cash flows from operating, investing or financing activities.
 
For the Three Months Ended,
 
For the Six Months Ended,
 
October 2, 2011
 
October 2, 2011
(in thousands, except per share amounts)
As
Reported (1)
Adjustments
As
 Revised
 
As
Reported (1)
Adjustments
As
 Revised
Consolidated Statement of Operations
 
 
 
 
 
 
 
Cost of revenues
$
64,015

$
670

$
64,685

 
$
131,584

$
2,950

$
134,534

Gross profit
74,303

(670
)
73,633

 
156,019

(2,950
)
153,069

Research and development
39,567

(383
)
39,184

 
79,234

(235
)
78,999

Selling, general and administrative
24,868

20

24,888

 
50,716

101

50,817

Total operating expenses
64,435

(363
)
64,072

 
129,950

(134
)
129,816

Operating income
9,868

(307
)
9,561

 
26,069

(2,816
)
23,253

Income from continuing operations
   before income taxes
8,040

(307
)
7,733

 
24,285

(2,816
)
21,469

Provision (benefit) for income taxes
(367
)
—

(367
)
 
580

20

600

Net income from continuing operations
8,407

(307
)
8,100

 
23,705

(2,836
)
20,869

Net income
$
47,054

$
(307
)
$
46,747

 
$
54,737

$
(2,836
)
$
51,901

 
 
 
 
 
 
 
 
Basic income (loss) per share:
 
 
 
 
 
 
 
    Continuing operations
$
0.06

$
—

$
0.06

 
$
0.16

$
(0.02
)
$
0.14

    Net income (loss)
$
0.33

$
(0.01
)
$
0.32

 
$
0.37

$
(0.02
)
$
0.35

 
 
 
 
 
 
 
 
Diluted net income (loss) per share:
 
 
 
 
 
 
 
    Continuing operations
$
0.06

$
—

$
0.06

 
$
0.16

$
(0.02
)
$
0.14

    Net income (loss)
$
0.32

$
—

$
0.32

 
$
0.37

$
(0.02
)
$
0.35

 
 
 
 
 
 
 
 
1) Reflects previously reported amounts as adjusted for discontinued operations (see Note 5)