Interest expense, net

9 Months Ended

Oct. 31, 2013

Interest expense, net [Abstract]

Interest Income and Interest Expense Disclosure [Text Block]

Interest expense, net.

	Three Months Ended October 31,						Nine Months Ended October 31,
	2013			2012			2013			2012
Interest expense		$332			$592			$1,504			$1,520
Interest income	(142		)	(79		)	(422		)	(372		)
Interest expense, net		$190			$513			$1,082			$1,148