New Accounting Pronouncements	12 Months Ended
Jan. 31, 2018
New accounting pronouncements. [Abstract]
New Accounting Pronouncements	Recent accounting pronouncements. In March 2016, the FASB issued guidance relating to the accounting for share-based payment transactions. This guidance involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classifications of awards as either equity or liabilities and classification on the statement of cash flows. The standard is effective for the Company beginning in its fiscal year 2017, including interim periods within those fiscal years, and early adoption is permitted. The Company adopted this new guidance in the first quarter of 2017, and it did not have a material impact on the Company's operating results, financial position or cash flows. In August 2016, the FASB issued Accounting Standards Update ("ASU") 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. The new standard provides guidance on eight targeted areas and how they are presented and classified in the statement of cash flows. The guidance is effective for fiscal years beginning after December 15, 2017. The Company adopted this new guidance in the first quarter of 2017, and it did not have a material impact on the Company's operating results, financial position or cash flows. In March 2017, the FASB issued authoritative guidance that changes the income statement presentation of the components of net periodic benefit cost related to defined benefit pension and other postretirement plans. The primary change under the new guidance is that only the service cost component of net periodic benefit cost should be included in operating income and is eligible for capitalization as an asset. The other components of net periodic benefit cost, such as interest cost, the expected return on assets, amortization of actuarial gains and losses and prior service cost, should be presented below operating income. The guidance is effective for the Company starting February 1, 2018 and will be applied retrospectively to the presentation of net periodic benefit cost and prospectively to the capitalization of service cost. The Company does not expect the adoption of this guidance to have a material impact on the results of operations or financial position. 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 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 completed staff education and has completed the discovery and analysis phases of reviewing contracts and identifying potential differences that would result from applying the new standard to current contracts. There will be no change to the financial position, results of operations, or cash flows when the standard is adopted. The Company will have updated disclosures and has selected the modified retrospective basis with a cumulative adjustment to opening retained earnings in the year of initial adoption. The Company has identified and implemented changes to the Company’s business processes, systems and controls to support adoption of the new standard in 2018. The Company does not expect Topic 606 to have a material impact on the financial statements, though internal processes, record keeping and disclosures will be impacted. The new standard is 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 March 2016, the FASB issued guidance relating to the accounting for share-based payment transactions. This guidance involves several aspects of the accounting for share-based payment transactions, including the income tax consequences, classifications of awards as either equity or liabilities and classification on the statement of cash flows. The standard is effective for the Company beginning in its fiscal year 2017, including interim periods within those fiscal years, and early adoption is permitted. The Company adopted this new guidance in the first quarter of 2017, and it did not have a material impact on the Company's operating results, financial position or cash flows.

In August 2016, the FASB issued Accounting Standards Update ("ASU") 2016-15, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. The new standard provides guidance on eight targeted areas and how they are presented and classified in the statement of cash flows. The guidance is effective for fiscal years beginning after December 15, 2017. The Company adopted this new guidance in the first quarter of 2017, and it did not have a material impact on the Company's operating results, financial position or cash flows.

In March 2017, the FASB issued authoritative guidance that changes the income statement presentation of the components of net periodic benefit cost related to defined benefit pension and other postretirement plans. The primary change under the new guidance is that only the service cost component of net periodic benefit cost should be included in operating income and is eligible for capitalization as an asset. The other components of net periodic benefit cost, such as interest cost, the expected return on assets, amortization of actuarial gains and losses and prior service cost, should be presented below operating income. The guidance is effective for the Company starting February 1, 2018 and will be applied retrospectively to the presentation of net periodic benefit cost and prospectively to the capitalization of service cost. The Company does not expect the adoption of this guidance to have a material impact on the results of operations or financial position.

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 completed staff education and has completed the discovery and analysis phases of reviewing contracts and identifying potential differences that would result from applying the new standard to current contracts. There will be no change to the financial position, results of operations, or cash flows when the standard is adopted. The Company will have updated disclosures and has selected the modified retrospective basis with a cumulative adjustment to opening retained earnings in the year of initial adoption. The Company has identified and implemented changes to the Company’s business processes, systems and controls to support adoption of the new standard in 2018. The Company does not expect Topic 606 to have a material impact on the financial statements, though internal processes, record keeping and disclosures will be impacted. The new standard is 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.