Stock options Unvested options (Tables)

12 Months Ended

Jan. 31, 2016

Unvested options [Abstract]

Schedule of Nonvested Share Activity [Table Text Block]

Unvested options outstanding	Options		Weighted-average grant date fair value	Aggregate intrinsic value
Outstanding at January 31, 2015	232		$10.11	$0
Granted	51		6.38
Vested	(92	)
Expired or forfeited	(25	)	9.65
Outstanding at January 31, 2016	166		$9.51	$3