XML 23 R10.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Equity-based compensation
6 Months Ended
Jul. 31, 2011
Equity-based Compensation [Abstract]  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Equity-based compensation. The Company has equity-based compensation plans from which stock-based compensation awards can be granted to eligible employees, officers or directors.


Stock-based compensation expense
2011
2010
Three months ended
$69
$225
Six months ended
$297
$482


The fair value of the outstanding option awards were estimated on the grant dates using the Black-Scholes option pricing model.
 
Six months ended
Six months ended
Fair value assumptions
July 31, 2011
July 31, 2010
Expected volatility
51.72% - 66.82%
51.72%-66.82%
Risk-free interest rate
1.54% - 5.13%
1.88%-5.16%
Dividend yield
none
none
Expected life
4.9 - 7 years
5 - 7 years


Option activity
Options
Weighted-Average Exercise Price
Per Share
Weighted-Average Remaining Contractual Term in Years
Aggregate Intrinsic Value
Outstanding on January 31, 2011
777
$11.88
6.9
$2,241
Granted
155
7.68
 
 
Exercised
(19)
4.48
 
75
Expired or forfeited
(25)
20.29
 
 
Outstanding on July 31, 2011
888
11.07
7.1
1,455
 
 
 
 
 
Exercisable at July 31, 2011
504
13.49
5.7
743
Weighted-average fair value of options granted during first six months of 2011
 
3.84
 
 


Unvested option activity
Unvested
 Options
Outstanding
Weighted-
Average Price
Per Share
Aggregate
 Intrinsic Value
Outstanding on January 31, 2011
369
$9.98
$1,241
Granted
155
7.68
 
Vested
(139)
 
 
Expired or forfeited
(1)
9.31
 
Outstanding on July 31, 2011
384
7.89
712


As of July 31, 2011, there was $1.4 million of total unrecognized compensation cost related to unvested stock options. The cost is expected to be recognized over a period of 2.9 years.