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Retirement plans Multi-employer (Tables) | 12 Months Ended
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Jan. 31, 2017
Multiemployer Plans [Line Items] |
Schedule of Multiemployer Plans [Table Text Block] |
|  |  | Funded Zone Status | FIP/RP Status Pending/Implemented | Contribution |  |
Plan Name | EIN | Plan # | 2016 | 2015 | Surcharge Imposed | Collective Bargaining Expiration Date
Plumbers & Pipefitters Local 572 Pension Fund | 626102837 | 001 | Green | No | 257 |  | 233 |  | No | 3/31/2019

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Tabular disclosure of the quantitative and qualitative information related to multiemployer plans in which the employer participates. A multiemployer plan is a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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