Retirement plans Multi-employer (Tables)

12 Months Ended

Jan. 31, 2018

Multiemployer Plans [Line Items]

Schedule of Multiemployer Plans [Table Text Block]

Plan Name	EIN	Plan #	Funded Zone Status	FIP/RP Status Pending/Implemented	2017 Contribution	2016 Contribution	Surcharge Imposed	Collective Bargaining Expiration Date
Plumbers & Pipefitters Local 572 Pension Fund	626102837	001	Green	No	$209	$257	No	3/31/2019