Equity-based compensation

3 Months Ended

Apr. 30, 2012

Equity-based Compensation [Abstract]

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

Equity-basedcompensation. The Company has equity-based compensation plans from which stock-based compensation awards can be granted to eligible employees, officers or directors.

	Three Months Ended April 30,
	2012	2011
Stock-based compensation expense	$86	$228

The fair value of the outstanding option awards was estimated on the grant dates using the Black-Scholes option pricing model.

	Three Months Ended April 30,
Fair value assumptions	2012	2011
Expected volatility	58.12% - 66.82%	51.72% - 65.54%
Risk free interest rate	1.54% - 3.57%	1.88% - 5.13%
Dividend yield	none	none
Expected life	4.9 - 5.7 years	5.0 - 7.0 years

Option activity	Options	Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term in Years	Aggregate Intrinsic Value
Outstanding on January 31, 2012	843		$11.48	6.9		$430
Exercised	(2)	6.62			2
Expired or forfeited	(19)	11.52
Outstanding end of period	822	11.49		6.6	256
Exercisable end of period	457		$14.39	5.4		$145

Unvested option activity	Unvested Options Outstanding	Weighted Average Price Per Share	Aggregate Intrinsic Value
Outstanding on January 31, 2012	373	$7.84		$212
Vested	(5)
Expired or forfeited	(3)	6.98
Outstanding end of period	365	$7.86		$111

As of April 30, 2012, there was $848 thousand of total unrecognized compensation expense related to unvested stock options. The expense is expected to be recognized over a period of 2.2 years.