Stock options Option activity (Tables)

12 Months Ended

Jan. 31, 2014

Option activity [Abstract]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

		2013	2012
1.	Risk-free interest rate	.74%-2.82%	.74%-3.57%
2.	Expected volatility	42.12%-65.54%	53.90%-66.82%
3.	Expected life in years	4.9 to 5.7	4.9 to 5.7
4.	Dividend yield	—	—

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Options		Weighted average exercise price	Weighted average remaining contractual term	Aggregate intrinsic value
Outstanding at January 31, 2012	843		$11.48	6.9	$430
Granted	173		6.78
Exercised	(11	)	3.10		46
Expired or forfeited	(36	)	10.47
Outstanding at January 31, 2013	969		10.77	6.6	40
Options exercisable at January 31, 2013	586		$13.30	5.3	37
Granted	103		10.55
Exercised	(223	)	7.11		1,082
Expired or forfeited	(73	)	11.90
Outstanding at January 31, 2014	776		11.69	6.1	3,859
Options exercisable at January 31, 2014	513		$13.43	4.8	$2,226