Interest expense, net

3 Months Ended

Apr. 30, 2012

Interest Expense, Net [Abstract]

Interest Income and Interest Expense Disclosure [Text Block]

Interest expense, net.

	Three Months Ended April 30,
	2012			2011
Interest expense		$501			$520
Interest income	(130		)	(233		)
Interest expense, net		$371			$287