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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 30, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
Awards with graded vesting are recognized using the straight-line method with the following assumptions:

 
 
2010
 
2011
 
2012
 
Expected life:(1)
 
 
 
 
 
 
 
    Stock options
 
1.4 years
 
2.2 years
 
10 years
 
Risk-free interest rate(2)
 
0.1% - 3.6%
 
0.1% - 3.4%
 
1.6% - 2.3%
 
Volatility(3)
 
28.4% - 73.8%
 
29.3% - 65.3%
 
59.0% - 59.7%
 
Forfeiture rate(4)
 
16.3%
 
16.3%
 
16.3%
 
Dividend yield(5)
 
—%
 
—%
 
—%
 

(1)
In 2010, all unvested options related to the acquisition of HBE. HBE used the simplified method for calculating the expected life of the option, and the Company used this method for calculating the expected life of the options assumed. In 2011 and 2012, no unvested options were granted and the expected life was equal to the life of the option.

(2)
The risk-free interest rate is based on U.S. Treasury yields in effect at the time of grant with a term equal to the expected term of the options.

(3)
In 2010, 2011, and 2012, the Company estimated implied volatility based upon trailing volatility.

(4)
Forfeitures are estimated at the time of grant based upon historical information. Forfeitures will be revised, if necessary, in subsequent periods if actual forfeitures differ from estimates. In 2010, the estimated forfeitures for the HBE options were based upon the historical information of HBE option holders.

(5)
The Company has no history or expectation of paying dividends on its common stock.
Schedule of Stock Options Roll Forward
A summary of the status of the Company's stock option plan as of December 30, 2012 and changes in options outstanding under the plan for the year ended December 30, 2012 is as follows:

 
 
Number of
Options
 
Weighted-Average Exercise Price per Share
 
Weighted-
Average
Remaining
Contractual
Term
(in years)
 
Aggregate Intrinsic Value
 
 
 
(000's)
 
 
 
 
 
(000's)
 
Options outstanding at December 25, 2011
 
1,771

 
$
24.69

 
2.6

 
$
219

 
Granted
 
8

 
$
5.22

 
—

 
—

 
Exercised
 
—

 
$
—

 
—

 
—

 
Forfeited or expired
 
(646
)
 
$
19.24

 
—

 
—

 
Options outstanding at December 30, 2012
 
1,133

 
$
27.66

 
2.8

 
$
80.0

 
Options exercisable at December 30, 2012
 
1,112

 
$
28.06

 
2.8

 
$
80.0

 
Share-based Compensation Arrangement By Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value and Exercises in Period, Total Intrinsic Value
During the years ended December 26, 2010, December 25, 2011, and December 30, 2012 the following values relate to the grants and exercises under the Company's option plans:

 
 
2010
 
2011
 
2012
 
Weighted average grant date fair value of options granted
 
$
6.08

 
$
2.38

 
$
3.56

 
Total intrinsic value of options exercised (in thousands)
 
$
818

 
$
1,832

 
$
—

 
Schedule of Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding
Additional information about stock options outstanding at December 30, 2012 with exercise prices less than and greater than $4.80 per share, the stock price at December 28, 2012, the last trading day of the period, follows:

 
 
 
Exercisable
 
Unexercisable
 
Total
 
Stock Options
 
Number of
Shares
(000's)
 
Weighted Average Exercise Price
 
Number of
Shares
(000's)
 
Weighted Average Exercise Price
 
Number of
Shares
(000's)
 
Weighted Average Exercise Price
 
Less than $4.80
 
547

 
$
10.35

 
21

 
$
6.91

 
568

 
$
10.22

 
Above $4.80
 
565

 
$
45.20

 
—

 
$
—

 
565

 
$
45.20

 
Total outstanding
 
1,112

 
$
28.06

 
21

 
$
6.91

 
1,133

 
$
27.66

 
Schedule of Nonvested Restricted Stock Units Activity
The following table summarizes the Company's Restricted Stock Unit activity:

 
 
Restricted
Stock Units
(000's)
 
Weighted-Average Grant Date Fair Value
 
Nonvested balance at December 25, 2011
 
1,211

 
$
11.47

 
Grants
 
2,653

 
$
5.93

 
Vested
 
(187
)
 
$
10.44

 
Forfeitures
 
(7
)
 
$
7.71

 
Nonvested balance at December 30, 2012
 
3,670

 
$
7.53

 
Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions
The assumptions and resulting fair values of options granted for 2011 and 2012 were as follows:

 
 
Offering
Periods
January 1 to
December 31,
2011
 
Offering
Periods
January 1 to
December 31
2012
 
Expected term (in years)(1)
 
0.5
 
0.5
 
Risk-free interest rate(2)
 
0.10% - 0.19%
 
0.16% - 0.06%
 
Expected volatility(3)
 
28.5% - 43.6%
 
49.7% - 65.73%
 
Expected dividend yield(4)
 
0%
 
0%
 
Weighted average grant-date fair value per share
 
$3.05
 
$1.93
 

(1)
The expected term is equivalent to the offering period.

(2)
The risk-free interest rate is based on U.S. Treasury yields in effect at the time of grant with a term equal to the expected term.

(3)
The Company estimated implied volatility based upon trailing volatility.

(4)
The Company has no history or expectation of paying dividends on its common stock.