Retirement plans Cash flows (Tables)

12 Months Ended

Jan. 31, 2016

Defined Benefit Plan Disclosure [Line Items]

Schedule of Expected Benefit Payments [Table Text Block]

Cash flows
Expected employer contributions for the fiscal year ending January 31, 2016		$—
Expected employee contributions for the fiscal year ending January 31, 2016	—
Estimated future benefit payments reflecting expected future service for the fiscal year(s) ending January 31,:
2017	326
2018	349
2019	348
2020	363
2021	363
2022 - 2026	$1,841