Interest expense, net

6 Months Ended

Jul. 31, 2017

Interest Income (Expense), Net [Abstract]

Interest Income and Interest Expense Disclosure [Text Block]

Interest expense, net.

	Three Months Ended July 31,						Six Months Ended July 31,
	2017			2016			2017			2016
Interest expense		$193			$139			$358			$392
Interest income	(36		)	(42		)	(44		)	(69		)
Interest expense, net		$157			$97			$314			$323