Unaudited Interim Financial Statements	9 Months Ended
Jan. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Unaudited Interim Financial Statements	Note 1: Unaudited Interim Financial Statements The accompanying financial statements have been prepared in accordance with the instructions for Form 10-Q and do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. It is suggested that these unaudited condensed financial statements be read in conjunction with the financial statements and notes thereto included in the Company’s April 30, 2018 annual report on Form 10-K. In the opinion of management, all adjustments, consisting only of normal recurring adjustments considered necessary for a fair presentation, have been included. Operating results for any quarter are not necessarily indicative of the results for any other quarter or for the full year. Accounting Estimates—The preparation of these financial statements requires the use of estimates and assumptions including the carrying value of assets. The estimates and assumptions result in approximate rather than exact amounts. Recently Issued Accounting Pronouncements — In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which provides guidance for accounting for leases. ASU 2016-02 requires lessees to classify leases as either finance or operating leases and to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of the lease classification. The lease classification will determine whether the lease expense is recognized based on an effective interest rate method or on a straight-line basis over the term of the lease. Accounting for lessors remains largely unchanged from current GAAP. ASU 2016-02 is effective for the Company beginning May 1, 2019. Early adoption is permitted. In July 2018, the FASB issued ASU No. 2018-10 “Codification Improvements to Topic 842, Leases” (“ASU 2018-10”) and ASU No. 2018-11 “Leases (Topic 842) Targeted Improvements” (“ASU 2018-11”). ASU 2018-10 provides certain amendments that affect narrow aspects of the guidance issued in ASU 2016-02. ASU 2018-11 allows all entities adopting ASU 2016-02 to choose an additional (and optional) transition method of adoption, under which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU 2018-11 also allows lessors to not separate non-lease components from the associated lease component if certain conditions are met. The Company will adopt the ASUs in the first quarter of fiscal 2020 and the Company’s accounting systems will be upgraded to comply with the requirements of the new standard, however, the adoption of ASU 2016-02 is not anticipated to have a material impact on the Company’s financial statements and related disclosures. In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02). Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income (loss) are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU 2018-02 allow a reclassification from accumulated other comprehensive income (loss) to retained earnings (accumulated deficit) for stranded income tax effects resulting from the Tax Cuts and Jobs Act (the Tax Act). The amendments in this ASU also require certain disclosures about stranded income tax effects. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption in any period is permitted. The Company has not yet adopted ASU 2018-02 and is currently evaluating the potential impact of adopting the applicable guidance on the Company’s financial statements and related disclosures. In July 2018, the FASB issued ASU No. 2018-09, “Codification Improvements” (“ASU 2018-09”). ASU 2018-09 provides amendments to a wide variety of topics in the FASB’s Accounting Standards Codification, which applies to all reporting entities within the scope of the affected accounting guidance. The transition and effective date guidance are based on the facts and circumstances of each amendment. Some of the amendments in ASU 2018-09 do not require transition guidance and were effective upon issuance of ASU 2018-09. However, many of the amendments do have transition guidance with effective dates for annual periods beginning after December 15, 2018. The Company is currently evaluating the potential impact of adopting the applicable guidance, however the Company does not believe that the adoption of ASU 2018-09 will have a material impact on the Company’s financial statements and related disclosures. In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement - Disclosure Framework (Topic 820). The updated guidance improves the disclosure requirements on fair value measurements. The updated guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted for any removed or modified disclosures. The Company is currently assessing the timing and impact of adopting the updated provisions. In August 2018, The FASB issued ASU 2018-14 to improve the effectiveness of disclosures for defined benefit plans under ASC 715-20. The ASU applies to employers that sponsor defined benefit pension or other postretirement plans. The FASB issued ASU 2018-14 as part of its disclosure framework project, which has an objective and primary focus to improve the effectiveness of disclosures in the notes to financial statements. As part of the project, during August 2018, the Board also issued a Concepts Statement, which the FASB used as a basis for amending the disclosure requirements for Subtopic 715-20. The guidance is effective or fiscal years ending after December 15, 2020 and early adoption is permitted. The Company is currently assessing the timing and impact of adopting the updated provisions. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments.” Subsequently, in November 2018, the FASB issued ASU 2018-19, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses”. ASU 2016-13 requires entities to measure all expected credit losses for most financial assets held at the reporting date based on an expected loss model which includes historical experience, current conditions, and reasonable and supportable forecasts. Entities will now use forward-looking information to better form their credit loss estimates. ASU 2016-13 also requires enhanced disclosures to help financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an entity’s portfolio. ASU 2016-13 and ASU 2018-19 are effective for the Company on May 1, 2020, including interim periods within those fiscal periods, with early adoption permitted. Management is currently assessing the impact the new guidance will have on the Company’s financial statements.

Unaudited Interim Financial Statements

9 Months Ended

Jan. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Note 1: Unaudited Interim Financial Statements

The accompanying financial statements have been prepared in accordance with the instructions for Form 10-Q and do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. It is suggested that these unaudited condensed financial statements be read in conjunction with the financial statements and notes thereto included in the Company’s April 30, 2018 annual report on Form 10-K. In the opinion of management, all adjustments, consisting only of normal recurring adjustments considered necessary for a fair presentation, have been included. Operating results for any quarter are not necessarily indicative of the results for any other quarter or for the full year.

Accounting Estimates—The preparation of these financial statements requires the use of estimates and assumptions including the carrying value of assets. The estimates and assumptions result in approximate rather than exact amounts.

Recently Issued Accounting Pronouncements — In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842)” (“ASU 2016-02”), which provides guidance for accounting for leases. ASU 2016-02 requires lessees to classify leases as either finance or operating leases and to record a right-of-use asset and a lease liability for all leases with a term greater than 12 months regardless of the lease classification. The lease classification will determine whether the lease expense is recognized based on an effective interest rate method or on a straight-line basis over the term of the lease. Accounting for lessors remains largely unchanged from current GAAP. ASU 2016-02 is effective for the Company beginning May 1, 2019. Early adoption is permitted. In July 2018, the FASB issued ASU No. 2018-10 “Codification Improvements to Topic 842, Leases” (“ASU 2018-10”) and ASU No. 2018-11 “Leases (Topic 842) Targeted Improvements” (“ASU 2018-11”). ASU 2018-10 provides certain amendments that affect narrow aspects of the guidance issued in ASU 2016-02. ASU 2018-11 allows all entities adopting ASU 2016-02 to choose an additional (and optional) transition method of adoption, under which an entity initially applies the new leases standard at the adoption date and recognizes a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. ASU 2018-11 also allows lessors to not separate non-lease components from the associated lease component if certain conditions are met. The Company will adopt the ASUs in the first quarter of fiscal 2020 and the Company’s accounting systems will be upgraded to comply with the requirements of the new standard, however, the adoption of ASU 2016-02 is not anticipated to have a material impact on the Company’s financial statements and related disclosures.

In February 2018, the FASB issued ASU No. 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (ASU 2018-02). Under existing U.S. GAAP, the effects of changes in tax rates and laws on deferred tax balances are recorded as a component of income tax expense in the period in which the law was enacted. When deferred tax balances related to items originally recorded in accumulated other comprehensive income (loss) are adjusted, certain tax effects become stranded in accumulated other comprehensive income. The amendments in ASU 2018-02 allow a reclassification from accumulated other comprehensive income (loss) to retained earnings (accumulated deficit) for stranded income tax effects resulting from the Tax Cuts and Jobs Act (the Tax Act). The amendments in this ASU also require certain disclosures about stranded income tax effects. The guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption in any period is permitted. The Company has not yet adopted ASU 2018-02 and is currently evaluating the potential impact of adopting the applicable guidance on the Company’s financial statements and related disclosures.

In July 2018, the FASB issued ASU No. 2018-09, “Codification Improvements” (“ASU 2018-09”). ASU 2018-09 provides amendments to a wide variety of topics in the FASB’s Accounting Standards Codification, which applies to all reporting entities within the scope of the affected accounting guidance. The transition and effective date guidance are based on the facts and circumstances of each amendment. Some of the amendments in ASU 2018-09 do not require transition guidance and were effective upon issuance of ASU 2018-09. However, many of the amendments do have transition guidance with effective dates for annual periods beginning after December 15, 2018. The Company is currently evaluating the potential impact of adopting the applicable guidance, however the Company does not believe that the adoption of ASU 2018-09 will have a material impact on the Company’s financial statements and related disclosures.

In August 2018, the FASB issued ASU 2018-13, Fair Value Measurement - Disclosure Framework (Topic 820). The updated guidance improves the disclosure requirements on fair value measurements. The updated guidance is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Early adoption is permitted for any removed or modified disclosures. The Company is currently assessing the timing and impact of adopting the updated provisions.

In August 2018, The FASB issued ASU 2018-14 to improve the effectiveness of disclosures for defined benefit plans under ASC 715-20. The ASU applies to employers that sponsor defined benefit pension or other postretirement plans. The FASB issued ASU 2018-14 as part of its disclosure framework project, which has an objective and primary focus to improve the effectiveness of disclosures in the notes to financial statements. As part of the project, during August 2018, the Board also issued a Concepts Statement, which the FASB used as a basis for amending the disclosure requirements for Subtopic 715-20. The guidance is effective or fiscal years ending after December 15, 2020 and early adoption is permitted. The Company is currently assessing the timing and impact of adopting the updated provisions.

In June 2016, the FASB issued ASU 2016-13, “Financial Instruments—Credit Losses (Topic 326), Measurement of Credit Losses on Financial Instruments.” Subsequently, in November 2018, the FASB issued ASU 2018-19, “Codification Improvements to Topic 326, Financial Instruments-Credit Losses”. ASU 2016-13 requires entities to measure all expected credit losses for most financial assets held at the reporting date based on an expected loss model which includes historical experience, current conditions, and reasonable and supportable forecasts. Entities will now use forward-looking information to better form their credit loss estimates. ASU 2016-13 also requires enhanced disclosures to help financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an entity’s portfolio. ASU 2016-13 and ASU 2018-19 are effective for the Company on May 1, 2020, including interim periods within those fiscal periods, with early adoption permitted. Management is currently assessing the impact the new guidance will have on the Company’s financial statements.