Retirement plans Plan assets (Tables)

12 Months Ended

Jan. 31, 2014

Plan assets [Abstract]

Schedule of Allocation of Plan Assets [Table Text Block]

Level 1 market value of plan assets	2013	2012
Equity securities	$3,340	$3,343
U.S. bond market	2,453	2,183
High-quality inflation-indexed bonds issued by the U.S. Treasury and government agencies as well as domestic corporations	0	279
Real estate securities	149	126
Subtotal	5,942	5,931
Level 2 significant other observable inputs
Money market fund	409	134
Total	$6,351	$6,065