Interest expense, net

6 Months Ended

Jul. 31, 2014

Interest expense, net [Abstract]

Interest Income and Interest Expense Disclosure [Text Block]

Interest expense, net.

	Three Months Ended July 31,						Six Months Ended July 31,
	2014			2013			2014			2013
Interest expense		$391			$510			$743			$1,095
Interest income	(128		)	(125		)	(243		)	(289		)
Interest expense, net		$263			$385			$500			$806