Retirement plans Cash flows (Tables)

12 Months Ended

Jan. 31, 2018

Defined Benefit Plan Disclosure [Line Items]

Schedule of Expected Benefit Payments [Table Text Block]

Cash flows (in thousands)
Expected employer contributions for the fiscal year ending January 31, 2019		$—
Expected employee contributions for the fiscal year ending January 31, 2019	—
Estimated future plan benefit payments reflecting expected future service for the fiscal year(s) ending January 31,:
2019	349
2020	348
2021	342
2022	347
2023	347
2024 - 2028	$1,737