Stock options Option activity (Tables)

12 Months Ended

Jan. 31, 2018

Option activity [Abstract]

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

		2017		2016
1.	Risk-free interest rate	—	%	1.2	%
2.	Expected volatility	—	%	43.2	%
3.	Expected life in years	0		5.0
4.	Dividend yield	—	%	—	%

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

(Shares in thousands)	Options		Weighted average exercise price	Weighted average remaining contractual term	Aggregate intrinsic value
Outstanding on January 31, 2016	720		$11.38	5.1	$34
Granted	22		7.33
Exercised	(59	)	6.70		68
Expired or forfeited	(159	)	11.98
Outstanding on January 31, 2017	524		11.55	4.5	534
Options exercisable on January 31, 2017	450		$11.92	3.9	465
Exercised	(35	)	6.80		45
Expired or forfeited	(131	)	18.54
Outstanding on January 31, 2018	358		9.44	4.0	482
Options exercisable on January 31, 2018	327		$9.56	3.7	$433