Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Accounting	The accompanying unaudited consolidated financial statements have been prepared in accordance with GAAP for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the SEC. Accordingly, they do not include all the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. It is recommended that these unaudited interim consolidated financial statements be read in conjunction with the audited consolidated financial statements and notes thereto included in the Company's Annual Report on Form 10-K for the year ended June 30, 2019 ("2019 Form 10-K") filed with the SEC on September 13, 2019. The results of operations for the three months ended September 30, 2019 are not necessarily indicative of results that may be expected for the entire fiscal year ending June 30, 2020.
Use of Estimates	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect amounts reported in the financial statements. Various elements of the Company's accounting policies, by their nature, are inherently subject to estimation techniques, valuation assumptions, and other subjective assessments. In particular, management has identified several accounting policies that, due to the judgments, estimates and assumptions inherent in those policies, are critical to an understanding of the Company's financial statements. These policies relate to (i) the determination of the provision and the allowance for loan losses, (ii) the valuation of goodwill and other intangible assets, and (iii) the valuation of or recognition of deferred tax assets and liabilities. These policies and judgments, estimates and assumptions are described in greater detail in subsequent notes to the Consolidated Financial Statements and Management's Discussion and Analysis of Financial Condition and Results of Operations (Critical Accounting Policies) in our 2019 Form 10-K. Management believes that the judgments, estimates and assumptions used in the preparation of the financial statements are appropriate based on the factual circumstances at the time. However, given the sensitivity of the financial statements to these critical accounting policies, the use of other judgments, estimates and assumptions could result in material differences in the Company's results of operations or financial condition. Further, subsequent changes in economic or market conditions could have a material impact on these estimates and the Company's financial condition and operating results in future periods.
Recent Accounting Pronouncements	In February 2016, the FASB issued ASU 2016-02, "Leases (ASC 842)." The guidance in this ASU requires most leases to be recognized on the balance sheet as a right-of-use asset and a lease liability. It will be critical to identify leases embedded in a contract to avoid misstating the lessee’s balance sheet. For income statement purposes, the FASB retained a dual model, requiring leases to be classified as either operating or finance. Classification will be based on criteria that are largely similar to those applied in current lease accounting, but without explicit bright lines. The amendments in this ASU were effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018. In July 2018, the FASB issued ASU 2018-10, "Codification Improvements to Topic 842, Leases" and ASU 2018-11 "Leases (Topic 842): Targeted Improvements." ASU 2018-10 made 16 narrow-scope amendments to ASC 842. The amendments in ASU 2018-11 are intended to provide entities with relief from the costs of implementing certain aspects of the the new lease accounting standard. Specifically, an entity can elect not to recast the comparative periods presented when transitioning to ASC 842 and provides a lessor with the option to not separate lease and nonlease components when certain conditions are met. This ASU also provides a new transition method in addition to the existing transition method contained in ASU No. 2016-02 to allow entities to initially apply the new lease standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption. These amendments have the same effective date as ASU 2016-02. The Company adopted this ASU on July 1, 2019. The adoption increased other assets and liabilities by approximately $5.3 million as a result of ROU assets and lease liabilities related to certain banking offices and certain equipment under noncancelable operating lease agreements. The adoption of this ASU did not have an effect on the Consolidated Statements of Income or the Consolidated Statements of Changes in Stockholders' Equity. However, additional disclosures required by this ASU have been included in “Note 1 - Summary of Significant Accounting Policies” and "Note 11 - Leases" to the Company’s consolidated financial statements. In June 2016, the FASB issued ASU No. 2016-13, "Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments." The ASU significantly changes the impairment model for most financial assets that are measured at amortized cost and certain other instruments from an incurred loss model to an expected loss model. This ASU is effective for interim and annual reporting periods beginning after December 15, 2019. Early adoption is permitted for all entities beginning after December 15, 2018, including interim periods within those fiscal years. The Company has selected a third-party vendor to provide ongoing support under the new methodology. The Bank's project team is currently evaluating our current expected loss methodology of our loan and investment portfolios to identify the necessary modifications in accordance with this standard and expects a change in the processes and procedures to calculate the allowance for loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In addition, the Bank is also in the process of compiling historical data that will be used to calculate expected credit losses on its loan portfolio and intends to run parallel models during the latter part of fiscal year 2020 to ensure it is fully compliant with the ASU at the adoption date. A valuation adjustment to our allowance for loan losses or investment portfolio that is identified in this process will be reflected as a one-time adjustment in equity rather than earnings. Once adopted, the Company expects its allowance for loan losses to increase, however, until its evaluation is complete the magnitude of the increase will be unknown. In August 2017, FASB issued ASU 2017-12, "Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities." This ASU improves the transparency and understandability of disclosures in the financial statements regarding the entities risk management activities and reduces the complexity of hedge accounting. The amendments in this ASU permit hedge accounting for hedging relationships involving nonfinancial risk and interest rate risk by removing certain limitations in cash flow and fair value hedging relationships. In addition, the ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018 and early adoption is permitted. The Company adopted this ASU on July 1, 2019. The adoption did not have a material effect on the Company's Consolidated Financial Statements. In August 2018, the FASB issued ASU 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement." The amendments in this ASU removes, modifies, and adds certain disclosure requirements related to fair value measurements in ASC 820. The amendments in this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019 and early adoption is permitted. The adoption of ASU No. 2018-13 is not expected to have a material impact on the Company's Consolidated Financial Statements. In November 2018, the FASB issued ASU 2018-19, "Codification Improvements to Topic 326, Financial Instruments—Credit Losses." This update clarifies that receivables arising from operating leases are not within the scope of Subtopic 326-20. Instead, impairment of receivables arising from operating leases should be accounted for in accordance with Topic 842, Leases. The effective date and transition requirements for this ASU are the same as ASU 2016-13. The adoption did not have a material effect on the Company's Consolidated Financial Statements. In December 2018, the FASB issued ASU 2018-20, "Leases (Topic 842): Narrow-Scope Improvements for Lessors." The amendments in this update permit lessors, as an accounting policy election, to not evaluate whether certain sales taxes and other similar taxes are lessor costs or lessee costs. Instead, those lessors will account for those costs as if they are lessee costs. A lessor making this election will exclude from the consideration in the contract and from variable payments not included in the consideration in the contract all collections from lessees of taxes within the scope of the election and will provide certain disclosures. For certain lessor costs, the lessor must exclude from variable payments, and therefore revenue, lessor costs paid by lessees directly to third parties from variable payments. In addition, the lessor must account for costs excluded from the consideration of a contract that are paid by the lessor and reimbursed by the lessee as variable payments. A lessor will record those reimbursed costs as revenue. The amendments in this ASU related to recognizing variable payments for contracts with lease and nonlease components require lessors to allocate (rather than recognize as currently required) certain variable payments to the lease and nonlease components when the changes in facts and circumstances on which the variable payment is based occur. After the allocation, the amount of variable payments allocated to the lease components will be recognized as income in profit or loss in accordance with Topic 842, while the amount of variable payments allocated to nonlease components will be recognized in accordance with other Topics, such as Topic 606. The effective date and transition requirements for this ASU are the same as ASU 2016-02. The adoption did not have a material effect on the Company's Consolidated Financial Statements. In March 2019, the FASB issued ASU 2019-01, "Leases (Topic 842): Codification Improvements." The amendments in this update include the following items: i) determining the fair value of the underlying asset by lessors that are not manufacturers or dealers; ii) requiring cash received from lessors from sales-type and direct financing leases to be presented in the cash flow statement within investing activities; and iii) clarifying interim disclosure requirements. The effective date and transition requirements for the first and second items of this ASU are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019 and early adoption is permitted. The effective date and transition requirements for the third item of this ASU is the same as ASU 2016-02. The adoption did not have a material effect on the Company's Consolidated Financial Statements. In April 2019, the FASB issued ASU 2019-04, "Codification Improvements to Topic 326, Financial Instruments-Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments." The amendments in this update are part of the FASB's ongoing project to improve codification and correcting unintended application. The items within this ASU are not expected to have a significant effect on current accounting practice. The effective date and transition requirements for the amendments to Financial Instruments (ASU 2016-01) are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2019 and early adoption is permitted. The effective date and transition requirements for the amendments to Financial Instruments-Credit Losses (ASU 2016-13) are the same as ASU 2016-13 noted above. The effective date and transition requirements for the amendments to Derivatives and Hedging (ASU 2017-12) are the same as ASU 2017-12 noted above.The adoption of ASU No. 2019-04 is not expected to have a material impact on the Company's Consolidated Financial Statements. In May 2019, the FASB issued ASU 2019-05, "Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief." The amendments in this update allow companies to irrevocably elect, upon the adoption of ASU 2016-13, the fair value option for financial instruments that i) were previously recorded at amortized cost and ii) are within the scope of the credit losses guidance in ASC 326-20, iii) are eligible for the fair value option under ASC 825-10, and iv) are not held-to-maturity debt securities. The effective date and transition requirements for this ASU is the same as ASU 2016-13. The adoption of ASU No. 2019-05 is not expected to have a material impact on the Company's Consolidated Financial Statements. In July 2019, the FASB issued ASU 2019-07, "Codification Updates to SEC Sections." This ASU amends certain paragraphs in the ASC to reflect the issuance of SEC final rules on Disclosure Update and Simplification and Investment Company Reporting Modernization and other miscellaneous updates. The amendments became effective upon issuance. The adoption did not have a material effect on the Company's Consolidated Financial Statements.