Retirement plans Retirement plans (Tables)

12 Months Ended

Jan. 31, 2013

Amounts recognized in other comprehensive income [Abstract]

Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block]

Amounts recognized in other comprehensive income
Actuarial gain (loss) on obligation	$113	$(1,380)
Actual gain (loss) on plan assets	303	(1	)
Reclassify prior service cost	50	127
Total in other comprehensive income (loss)	$466	$(1,254)
Cash flows
Expected employer contributions for 2013 [fiscal year ending 1/31/2014]		$300
Expected employee contributions for 2013 [fiscal year ending 1/31/2014]		—
Estimated future benefit payments reflecting expected future service for the fiscal year(s) ending January 31,:
2014		328
2015		337
2016		351
2017		356
2018		380
2019 - 2023		$1,989