XML 19 R26.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Stock-Based Compensation (Tables)
6 Months Ended
Jun. 26, 2011
Stock-Based Compensation  
Stock Option Activity Under the Principal Option Plans
 
Number of
Shares
Weighted-
Average
Exercise
Price
Weighted-
Average
Remaining
Contractual
Term
(in years)
Aggregate
Intrinsic
Value
(in thousands)
Outstanding at December 26, 2010
2,745,796
$ 19.11
5.32
$ 8,731
Granted
93,144
21.91
   
Exercised
(124,098)
12.50
   
Forfeited or expired
(18,965)
17.44
   
Outstanding at June 26, 2011
2,695,877
$ 19.52
5.03
$ 3,571
Vested and expected to vest at June 26, 2011
2,653,406
$ 19.52
4.97
$ 3,533
Exercisable at June 26, 2011
2,187,179
$ 19.66
4.39
$ 2,722
Assumption and Weighted-Average Fair Values Used in the Black Scholes Model
Six months ended
June 26,
2011
 
June 27,
2010
 
Weighted-average fair value of grants
$   9.88
 
$   7.39
 
Valuation assumptions:
       
Expected dividend yield
0.00
%
0.00
%
Expected volatility
49.85
%
48.11
%
Expected life (in years)
4.96
 
4.93
 
Risk-free interest rate
2.178
%
1.893
%
Nonvested Service Based Restricted Stock Units
 
Number of
Shares
Weighted-
Average
Vest Date
(in years)
Weighted-
Average
Grant Date
Fair Value
Nonvested at December 26, 2010
630,244
0.81
$ 20.48
Granted
246,142
 
$ 20.91
Vested
(150,949)
 
$ 21.52
Forfeited
(13,297)
 
$ 15.09
Nonvested at June 26, 2011
712,140
1.16
$ 20.51
Vested and expected to vest at June 26, 2011
590,013
1.14
 
Vested at June 26, 2011
62,590