Stock-based compensation Stock Compensation (Tables)

6 Months Ended

Jul. 31, 2017

Stock-based compensation [Abstract]

Stock-based compensation expense [Table Text Block]

	Three Months Ended July 31,				Six Months Ended July 31,
	2017		2016		2017		2016
Stock-based compensation expense		$65		$68		$59		$161
Restricted stock-based compensation expense		$452		$390		$647		$668

Fair value assumptions [Table Text Block]

	Six Months Ended July 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	(24	)	6.74			29
Expired or forfeited	(82	)	23.49
Outstanding end of period	418		9.49		4.5	274
Exercisable end of period	383			$9.59	4.2		$249

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	(7	)	11.97
Outstanding end of period	35			$8.42		$25

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	175		8.02
Issued	(55	)
Forfeited	(38	)	7.85
Outstanding end of period	372			$7.93		$2,988