XML 31 R37.htm IDEA: XBRL DOCUMENT v2.4.0.6
Stock-Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Schedule of restricted stock activity
The following table summarizes the restricted stock activity under the the Company's equity incentive plans :

 
Number
of
Shares
 
Weighted
Average
Fair Value
Per Share
Nonvested at January 1, 2010
89,705

 
$
1.65

Granted
82,248

 
$
13.86

Vested
(43,136
)
 
$
12.31

Forfeited/repurchased shares
(585
)
 
$
0.02

Nonvested at December 31, 2010
128,232

 
$
14.72

Granted
400,417

 
$
6.00

Vested
(63,299
)
 
$
1.99

Forfeited/repurchased shares
(12,783
)
 
$
15.24

Nonvested at December 31, 2011
452,567

 
$
7.09

Granted
36,640

 
$
6.55

Vested
(171,986
)
 
$
8.14

Forfeited/repurchased shares
—

 
$
—

Nonvested at December 31, 2012
317,221

 
$
6.46
Schedule of stock options activity
The following table summarizes the stock option activity under the Company's equity incentive plans:

 
Number
of
Shares
 
Weighted
Average
Exercise
Price
Per Share
 
Weighted
Average
Contractual
Life
(Years)
 
Aggregate
Intrinsic
Value
Outstanding at January 1, 2010
1,186,320

 
$
11.76

 
 
 
 

Granted
217,552

 
$
13.78

 
 
 
 

Exercised
(82,510
)
 
$
8.11

 
 
 
 

Forfeited
(12,364
)
 
$
14.97

 
 
 
 

Outstanding at December 31, 2010
1,308,998

 
$
12.30

 
 
 
 

Granted
953,800

 
$
6.02

 
 
 
 

Exercised
(32,124
)
 
$
5.78

 
 
 
 

Forfeited
(101,768
)
 
$
15.68

 
 
 
 

Outstanding at December 31, 2011
2,128,906

 
$
9.42

 
 
 
 

Granted
262,051

 
$
6.56

 
 
 
 

Exercised
(56,658
)
 
$
5.27

 
 
 
 

Forfeited
(50,457
)
 
$
7.97

 
 
 
 

Outstanding at December 31, 2012
2,283,842

 
$
9.23

 
 
 
 

 
 
 
 
 
 
 
 
Vested at December 31, 2012 and expected to vest
2,231,215

 
$
9.30

 
8.04 years
 
$
947

Exercisable at December 31, 2012
1,303,709

 
$
11.20

 
6.52 years
 
$
373
Schedule of stock option valuation assumptions
The Company calculates the fair value of each option on the date of grant using the Black-Scholes pricing model and the following weighted-average assumptions in each year:




 
2012
 
2011
 
2010
Weighted average grant-date fair value of options granted
$
4.08

 
$
4.03

 
$
6.58

Risk-free interest rate
1.42
%
 
1.5
%
 
1.5
%
Expected volatility
68.5
%
 
68.4
%
 
52.3
%
Expected term of options (in years)
6.2

 
7.5

 
5.4

Dividend yield
—
%
 
—
%
 
—
%
Schedule of intrinsic value of options exercised and fair value of shares vested
 
2012
 
2011
 
2010
Total intrinsic value of options exercised
$
130

 
$
143

 
$
799

Total fair value of shares vested
$
1,997

 
$
1,383

 
$
2,518