Recent accounting pronouncements	6 Months Ended
Jul. 31, 2017
Accounting Policies [Abstract]
Recent accounting pronouncements [Text Block]	Recent accounting pronouncements. In October 2016, the FASB issued authoritative guidance requiring the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs rather than when transferred to a third party as required under the current guidance. The new guidance is effective for the Company beginning February 1, 2018, with early adoption permitted. The Company is currently assessing the potential impact the guidance will have upon adoption. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). This ASU requires entities to recognize assets and liabilities for most leases on their balance sheets. It also requires additional qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. ASU No. 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company is currently evaluating the effect that this standard will have on the consolidated financial statements and related disclosures. In May 2014, FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers ("Topic 606")", with several clarifying updates issued during 2016. This new standard will replace all current GAAP guidance on this topic and eliminate all industry-specific guidance. The new revenue recognition guidance provides a unified model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. The mandatory adoption will require new qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, information about contract balances and performance obligations, and assets recognized from costs incurred to obtain or fulfill a contract. This guidance is effective for the Company beginning February 1, 2018, with early adoption permitted. The new revenue standards may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The Company has not yet selected the transition method. The Company currently expects to adopt the new revenue standards in the first quarter of 2018. The Company is currently evaluating the impact of adopting the standard on the Company’s financial position, results of operations, cash flows and related disclosures and has not determined its adoption methodology. The Company has completed staff education and is currently in discovery and analysis phases of reviewing contracts and identifying potential differences that would result from applying the new standard to current contracts. This step is expected to be complete in October 2017. Then the Company will begin to identify and implement changes to the Company’s business processes, systems and controls to support adoption of the new standard in 2018. Although it is early in the evaluation process, the Company does not expect Topic 606 to have a material impact on the financial statements, though internal processes, record keeping and disclosures may be significantly impacted. The sales are not believed to be material, because Topic 606 generally supports the recognition of revenue over time under the cost-to-cost method for the majority of the contracts, which is consistent with the current percentage of completion revenue recognition model. The Company evaluated other recent accounting pronouncements and does not expect them to have a material impact on the consolidated financial statements.

Recent accounting pronouncements. In October 2016, the FASB issued authoritative guidance requiring the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs rather than when transferred to a third party as required under the current guidance. The new guidance is effective for the Company beginning February 1, 2018, with early adoption permitted. The Company is currently assessing the potential impact the guidance will have upon adoption.

In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). This ASU requires entities to recognize assets and liabilities for most leases on their balance sheets. It also requires additional qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. ASU No. 2016-02 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company is currently evaluating the effect that this standard will have on the consolidated financial statements and related disclosures.

In May 2014, FASB issued ASU No. 2014-09, "Revenue from Contracts with Customers ("Topic 606")", with several clarifying updates issued during 2016. This new standard will replace all current GAAP guidance on this topic and eliminate all industry-specific guidance. The new revenue recognition guidance provides a unified model to determine when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration for which the entity expects to be entitled in exchange for those goods or services. The mandatory adoption will require new qualitative and quantitative disclosures about the nature, amount, timing and uncertainty of revenue and cash flows arising from customer contracts, including significant judgments and changes in judgments, information about contract balances and performance obligations, and assets recognized from costs incurred to obtain or fulfill a contract. This guidance is effective for the Company beginning February 1, 2018, with early adoption permitted. The new revenue standards may be applied retrospectively to each prior period presented or retrospectively with the cumulative effect recognized as of the date of adoption. The Company has not yet selected the transition method. The Company currently expects to adopt the new revenue standards in the first quarter of 2018.

The Company is currently evaluating the impact of adopting the standard on the Company’s financial position, results of operations, cash flows and related disclosures and has not determined its adoption methodology. The Company has completed staff education and is currently in discovery and analysis phases of reviewing contracts and identifying potential differences that would result from applying the new standard to current contracts. This step is expected to be complete in October 2017. Then the Company will begin to identify and implement changes to the Company’s business processes, systems and controls to support adoption of the new standard in 2018. Although it is early in the evaluation process, the Company does not expect Topic 606 to have a material impact on the financial statements, though internal processes, record keeping and disclosures may be significantly impacted. The sales are not believed to be material, because Topic 606 generally supports the recognition of revenue over time under the cost-to-cost method for the majority of the contracts, which is consistent with the current percentage of completion revenue recognition model.

The Company evaluated other recent accounting pronouncements and does not expect them to have a material impact on the consolidated financial statements.