Stock options Option activity (Tables)

12 Months Ended

Jan. 31, 2015

Option activity [Abstract]

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

		2014	2013
1.	Risk-free interest rate	.74%-1.77%	.74%-2.82%
2.	Expected volatility	40.88%-59.39%	42.12%-65.54%
3.	Expected life in years	4.9 to 5.1	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, 2013	969		$10.77	6.6	$40
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
Granted	97		12.41
Exercised	(45	)	7.27		194
Expired or forfeited	(64	)	18.92
Outstanding at January 31, 2015	764		11.45	5.7	—
Options exercisable at January 31, 2015	532		$12.04	4.5	$0