Stock-based compensation Stock Compensation (Tables)

9 Months Ended

Oct. 31, 2017

Stock-based compensation [Abstract]

Stock-based compensation expense [Table Text Block]

	Three Months Ended October 31,				Nine Months Ended October 31,
	2017		2016		2017		2016
Stock-based compensation expense		$21		$55		$80		$216
Restricted stock-based compensation expense		$294		$151		$938		$819

Fair value assumptions [Table Text Block]

	Nine Months Ended October 31,
Fair value assumptions	2017	2016
Expected volatility	43.2%	43.2%
Risk free interest rate	1.2%	1.2%
Dividend yield	0	0
Expected life	5.0	5.0

Option activity [Table Text Block]

Option activity	Options		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding at January 31, 2017	524			$11.55	4.5		$534
Exercised	(30	)	6.77			37
Expired or forfeited	(125	)	18.75
Outstanding end of period	369		9.50		4.3	338
Exercisable end of period	335			$9.62	3.9		$303

Unvested option activity [Table Text Block]

Unvested option activity	Options		Weighted Average Grant Date Fair Value		Aggregate Intrinsic Value
Outstanding at January 31, 2017	74			$9.31		$69
Vested	(32	)
Expired or forfeited	(8	)	11.49
Outstanding end of period	34			$8.32		$35

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

Restricted stock activity	Restricted Shares		Weighted Average Grant Price Per Share		Aggregate Intrinsic Value
Outstanding at January 31, 2017	290			$8.75		$2,540
Granted	172		8.02
Issued	(55	)
Forfeited	(39	)	7.86
Outstanding end of period	368			$8.35		$2,955