Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2016
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Text Block)	NOTE 1–SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: HomeStreet, Inc. and its wholly owned subsidiaries (the “Company”) is a diversified financial services company serving customers primarily in the western United States, including Hawaii. The Company is principally engaged in real estate lending, including mortgage banking activities, and commercial and consumer banking. The consolidated financial statements include the accounts of HomeStreet, Inc. and its wholly owned subsidiaries, HomeStreet Capital Corporation and HomeStreet Bank (the “Bank”), and the Bank’s subsidiaries, HomeStreet/WMS, Inc., HomeStreet Reinsurance, Ltd., Continental Escrow Company, HS Properties, Inc. and Union Street Holdings LLC. HomeStreet Bank was formed in 1986 and is a state-chartered commercial bank. The Company’s accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (U.S. GAAP). Inter-company balances and transactions have been eliminated in consolidation. Equity investments through which we are able to exercise significant influence over but do not control the investee and are not the primary beneficiary of the investee’s activities are accounted for using the equity method. In preparing the consolidated financial statements, the Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and revenues and expenses during the reporting periods and related disclosures. These estimates that require application of management's most difficult, subjective or complex judgments often result in the need to make estimates about the effect of matters that are inherently uncertain and may change in future periods. Management has made significant estimates in several areas, including the fair value of assets acquired and liabilities assumed in business combinations (Note 2, Business Combinations), allowance for credit losses (Note 4, Loans and Credit Quality), valuation of residential mortgage servicing rights and loans held for sale (Note 8, Mortgage Banking Operations), valuation of certain loans held for investment (Note 4, Loans and Credit Quality), valuation of investment securities (Note 3, Investment Securities), and valuation of derivatives (Note 7, Derivatives and Hedging Activities). Certain amounts in the financial statements from prior periods have been reclassified to conform to the current financial statement presentation. These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the Securities and Exchange Commission (“2015 Annual Report on Form 10-K”). Recent Accounting Developments On June 16, 2016, the FASB issued Accounting Standards Update ("ASU") 2016-13, Financial Instruments-Credit Losses (Topic 326). The amendments in this ASU were issued to provide financial statement users with more decision-useful information about the current expected credit losses (CECL) on financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to-maturity debt securities, trade and other receivables, net investment in leases and other commitments to extend credit held by a reporting entity at each reporting date. The amendments to this ASU require that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The amendments in this ASU eliminate the probable initial recognition in current GAAP and reflect an entity’s current estimate of all expected credit losses. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the financial assets. For purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, the initial allowance for credit losses is added to the purchase price rather than being reported as a credit loss expense. Subsequent changes in the allowance for credit losses on PCD assets are recognized through the statement of income as a credit loss expense. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. The amendments to this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The amendments in this ASU should be applied on a modified-retrospective transition approach that would require a cumulative-effect adjustment to the opening retained earnings in the statement of financial condition as of the date of adoption. A prospective transition approach is required for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Company is currently evaluating the impact of this ASU and the Company expects this ASU to have a material impact on the Company’s consolidated financial statements. On March 30, 2016, the FASB issued ASU 2016-09, Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting. The FASB issued this ASU as part of its initiative to reduce complexity in accounting standards. This new accounting standard simplifies several areas of accounting for share-based payment transactions, including tax provision, classification in the cash-flow statement, forfeitures, and statutory tax withholding requirements. The amendments in this ASU are effective for annual periods beginning after December 15, 2016, including interim periods within those annual periods. Early application was permitted upon issuance of the ASU. The Company determined to early adopt the provisions of ASU 2016-09 during the second quarter of 2016 and determined the new standard did not have a material impact on the Company's Consolidated Financial Statements. On February 25 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The amendments in this ASU require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, and a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. This ASU simplifies the accounting for sale and leaseback transactions. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application was permitted upon issuance of the ASU. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements. On September 25, 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments. The ASU was issued to simplify the accounting for measurement period adjustments for business combinations. The amendments in the ASU require that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the amendments in this ASU were effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The Company adopted this guidance during the first quarter of 2016 and applied it prospectively to adjustments to provisional amounts. On April 7, 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs. The ASU was issued to simplify the presentation of debt issuance costs. This guidance requires that debt issuance costs related to a recognized debt liability be presented on the statement of financial condition as a direct deduction from the carrying amount of that debt liability, consistent with the presentation of debt discounts. This guidance became effective for the Company for the interim and annual periods beginning after December 15, 2015, and early adoption was permitted for financial statements that had not been previously issued. The guidance is required to be applied on a retrospective basis to each individual period presented on the statement of financial condition. The Company adopted this guidance during the first quarter of 2016 and determined there was no material impact on the Company’s consolidated financial statements. On April 15, 2015, the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in Cloud Computing Arrangement. The ASU was issued to clarify a customer's accounting for fees paid in a cloud computing arrangement. The amendments provide guidance to customers in determining whether a cloud computing arrangement includes a software license that should be accounted for as internal-use software. If the arrangement does not contain a software license, it would be accounted for as a service contract. This guidance became effective for the Company for the interim and annual periods beginning after December 15, 2015; early adoption was permitted. The Company could elect to adopt the amendments either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. The Company adopted this guidance during the first quarter of 2016 and determined there was no material impact on the Company’s consolidated financial statements. In February 2015, the FASB issued ASU 2015-02, Consolidation. The ASU provides an additional requirement for a limited partnership or similar entity to qualify as a voting interest entity, amending the criteria for consolidating such an entity and eliminating the deferral provided under previous guidance for investment companies. In addition, the new guidance amends the criteria for evaluating fees paid to a decision maker or service provider as a variable interest and amends the criteria for evaluating the effect of fee arrangements and related parties on a variable interest entity ("VIE") primary beneficiary determination. This guidance was effective for interim and annual reporting periods beginning after December 15, 2015. The Company adopted this guidance during the first quarter of 2016 and determined there was no material impact on the Company’s consolidated financial statements. In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU clarifies the principles for recognizing revenue from contracts with customers. On August 12, 2015, the FASB issued ASU 2015-14 to defer the effective date of ASU 2014-09. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. On March 17, 2016, the FASB issued Accounting Standards Update 2016-08 to clarify the implementation guidance on principal versus agent considerations. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements.

NOTE 1–SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES:

HomeStreet, Inc. and its wholly owned subsidiaries (the “Company”) is a diversified financial services company serving customers primarily in the western United States, including Hawaii. The Company is principally engaged in real estate lending, including mortgage banking activities, and commercial and consumer banking. The consolidated financial statements include the accounts of HomeStreet, Inc. and its wholly owned subsidiaries, HomeStreet Capital Corporation and HomeStreet Bank (the “Bank”), and the Bank’s subsidiaries, HomeStreet/WMS, Inc., HomeStreet Reinsurance, Ltd., Continental Escrow Company, HS Properties, Inc. and Union Street Holdings LLC. HomeStreet Bank was formed in 1986 and is a state-chartered commercial bank.

The Company’s accounting and financial reporting policies conform to accounting principles generally accepted in the United States of America (U.S. GAAP). Inter-company balances and transactions have been eliminated in consolidation. Equity investments through which we are able to exercise significant influence over but do not control the investee and are not the primary beneficiary of the investee’s activities are accounted for using the equity method. In preparing the consolidated financial statements, the Company is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the financial statements and revenues and expenses during the reporting periods and related disclosures. These estimates that require application of management's most difficult, subjective or complex judgments often result in the need to make estimates about the effect of matters that are inherently uncertain and may change in future periods. Management has made significant estimates in several areas, including the fair value of assets acquired and liabilities assumed in business combinations (Note 2, Business Combinations), allowance for credit losses (Note 4, Loans and Credit Quality), valuation of residential mortgage servicing rights and loans held for sale (Note 8, Mortgage Banking Operations), valuation of certain loans held for investment (Note 4, Loans and Credit Quality), valuation of investment securities (Note 3, Investment Securities), and valuation of derivatives (Note 7, Derivatives and Hedging Activities). Certain amounts in the financial statements from prior periods have been reclassified to conform to the current financial statement presentation.

These unaudited interim financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the periods presented. These adjustments are of a normal recurring nature, unless otherwise disclosed in this Form 10-Q. The results of operations in the interim financial statements do not necessarily indicate the results that may be expected for the full year. The interim financial information should be read in conjunction with our Annual Report on Form 10-K for the year ended December 31, 2015, filed with the Securities and Exchange Commission (“2015 Annual Report on Form 10-K”).

Recent Accounting Developments

On June 16, 2016, the FASB issued Accounting Standards Update ("ASU") 2016-13, Financial Instruments-Credit Losses (Topic 326). The amendments in this ASU were issued to provide financial statement users with more decision-useful information about the current expected credit losses (CECL) on financial instruments that are not accounted for at fair value through net income, including loans held for investment, held-to-maturity debt securities, trade and other receivables, net investment in leases and other commitments to extend credit held by a reporting entity at each reporting date. The amendments to this ASU require that financial assets measured at amortized cost be presented at the net amount expected to be collected, through an allowance for credit losses that is deducted from the amortized cost basis. The amendments in this ASU eliminate the probable initial recognition in current GAAP and reflect an entity’s current estimate of all expected credit losses. The measurement of expected credit losses is based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the financial assets.

For purchased financial assets with a more-than-insignificant amount of credit deterioration since origination (“PCD assets”) that are measured at amortized cost, the initial allowance for credit losses is added to the purchase price rather than being reported as a credit loss expense. Subsequent changes in the allowance for credit losses on PCD assets are recognized through the statement of income as a credit loss expense.

Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security.

The amendments to this ASU are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The amendments in this ASU should be applied on a modified-retrospective transition approach that would require a cumulative-effect adjustment to the opening retained earnings in the statement of financial condition as of the date of adoption. A prospective transition approach is required for debt securities for which an other-than-temporary impairment had been recognized before the effective date. The Company is currently evaluating the impact of this ASU and the Company expects this ASU to have a material impact on the Company’s consolidated financial statements.

On March 30, 2016, the FASB issued ASU 2016-09, Stock Compensation (Topic 718), Improvements to Employee Share-Based Payment Accounting. The FASB issued this ASU as part of its initiative to reduce complexity in accounting standards. This new accounting standard simplifies several areas of accounting for share-based payment transactions, including tax provision, classification in the cash-flow statement, forfeitures, and statutory tax withholding requirements. The amendments in this ASU are effective for annual periods beginning after December 15, 2016, including interim periods within those annual periods. Early application was permitted upon issuance of the ASU. The Company determined to early adopt the provisions of ASU 2016-09 during the second quarter of 2016 and determined the new standard did not have a material impact on the Company's Consolidated Financial Statements.

On February 25 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The amendments in this ASU require lessees to recognize a lease liability, which is a lessee's obligation to make lease payments arising from a lease, and a right-of-use asset, which is an asset that represents the lessee's right to use, or control the use of, a specified asset for the lease term. This ASU simplifies the accounting for sale and leaseback transactions. The amendments in this ASU are effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early application was permitted upon issuance of the ASU. Lessees (for capital and operating leases) and lessors (for sales-type, direct financing, and operating leases) must apply a modified retrospective transition approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. The modified retrospective approach would not require any transition accounting for leases that expired before the earliest comparative period presented. Lessees and lessors may not apply a full retrospective transition approach. The Company is currently evaluating the provisions of this guidance to determine the potential impact the new standard will have on the Company's consolidated financial statements.

On September 25, 2015, the FASB issued ASU 2015-16, Simplifying the Accounting for Measurement-Period Adjustments. The ASU was issued to simplify the accounting for measurement period adjustments for business combinations. The amendments in the ASU require that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization, or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current-period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, the amendments in this ASU were effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. The Company adopted this guidance during the first quarter of 2016 and applied it prospectively to adjustments to provisional amounts.

On April 7, 2015, the FASB issued ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs. The ASU was issued to simplify the presentation of debt issuance costs. This guidance requires that debt issuance costs related to a recognized debt liability be presented on the statement of financial condition as a direct deduction from the carrying amount of that debt liability, consistent with the presentation of debt discounts. This guidance became effective for the Company for the interim and annual periods beginning after December 15, 2015, and early adoption was permitted for financial statements that had not been previously issued. The guidance is required to be applied on a retrospective basis to each individual period presented on the statement of financial condition. The Company adopted this guidance during the first quarter of 2016 and determined there was no material impact on the Company’s consolidated financial statements.

On April 15, 2015, the FASB issued ASU 2015-05, Customer’s Accounting for Fees Paid in Cloud Computing Arrangement. The ASU was issued to clarify a customer's accounting for fees paid in a cloud computing arrangement. The amendments provide guidance to customers in determining whether a cloud computing arrangement includes a software license that should be accounted for as internal-use software. If the arrangement does not contain a software license, it would be accounted for as a service contract. This guidance became effective for the Company for the interim and annual periods beginning after December 15, 2015; early adoption was permitted. The Company could elect to adopt the amendments either (1) prospectively to all arrangements entered into or materially modified after the effective date or (2) retrospectively. The Company adopted this guidance during the first quarter of 2016 and determined there was no material impact on the Company’s consolidated financial statements.

In February 2015, the FASB issued ASU 2015-02, Consolidation. The ASU provides an additional requirement for a limited partnership or similar entity to qualify as a voting interest entity, amending the criteria for consolidating such an entity and eliminating the deferral provided under previous guidance for investment companies. In addition, the new guidance amends the criteria for evaluating fees paid to a decision maker or service provider as a variable interest and amends the criteria for evaluating the effect of fee arrangements and related parties on a variable interest entity ("VIE") primary beneficiary determination. This guidance was effective for interim and annual reporting periods beginning after December 15, 2015. The Company adopted this guidance during the first quarter of 2016 and determined there was no material impact on the Company’s consolidated financial statements.

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606). This ASU clarifies the principles for recognizing revenue from contracts with customers. On August 12, 2015, the FASB issued ASU 2015-14 to defer the effective date of ASU 2014-09. Public business entities, certain not-for-profit entities, and certain employee benefit plans should apply the guidance in ASU 2014-09 to annual reporting periods beginning after December 15, 2017, including interim reporting periods within that reporting period. Earlier application is permitted only as of annual reporting periods beginning after December 15, 2016, including interim reporting periods within that reporting period. On March 17, 2016, the FASB issued Accounting Standards Update 2016-08 to clarify the implementation guidance on principal versus agent considerations. The adoption of this guidance is not expected to have a material impact on the Company's consolidated financial statements.