Basis of Presentation and Summary of Significant Account Policies (Policies)	9 Months Ended
Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Accounting	The unaudited interim consolidated financial statements as of and for the nine months ended March 31, 2021 have been prepared by The L.S. Starrett Company (the “Company”) in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These unaudited consolidated financial statements, which, in the opinion of management, reflect all adjustments (including normal recurring adjustments) necessary for a fair presentation, should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2020. The balance sheet as of June 30, 2020 has been derived from the audited consolidated financial statements as of and for the year ended June 30, 2020. Operating results are not necessarily indicative of the results that may be expected for any future interim period or for the entire fiscal year. The Company’s “fiscal year” begins July 1st and ends June 30th. The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America requires management to make judgments, assumptions and estimates that affect amounts reported in the consolidated financial statements and accompanying notes. Note 2 to the Company’s consolidated financial statements included in the Annual Report on Form 10-K for the year ended June 30, 2020 describes the significant accounting policies and methods used in the preparation of the consolidated financial statements.
Potential Impairment Due to COVID-19	Throughout the COVID-19 pandemic crisis, the Company's main focus has been on protecting the health and well-being of its employees, and the long-term financial health of the Company. The COVID-19 pandemic continues to have a negative impact on certain sectors of the Company's Sales, particularly in Industrial and Capital Equipment markets. Products sold through Consumer channels, principally in Brazil, have returned to or even exceed pre-pandemic levels. Some uncertainty still exists when trying to predict a full recovery across the whole company.
Revenue from Contracts with Customers	The Company accounts for a contract or purchase order when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability is probable. Revenue is recognized when control of the product passes to the customer, which is upon shipment, unless otherwise specified within the customer contract or on the purchase order as delivery, and is recognized at the amount that reflects the consideration the Company expects to receive for the products sold, including various forms of discounts. When revenue is recorded, estimates of returns are made and recorded as a reduction of revenue. Contracts with customers are evaluated to determine if there are separate performance obligations related to timing of product shipment that will be satisfied in different accounting periods. When that is the case, revenue is deferred until each performance obligation is met. No revenue was deferred as of March 31, 2021 and June 30, 2020. Purchase orders are of durations less than one year. As such, the Company applies the practical expedient in ASC paragraph 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less, for which work has not yet been performed. Certain taxes assessed by governmental authorities on revenue producing transactions, such as value added taxes, are excluded from revenue and recorded on a net basis. Performance Obligations The Company’s primary source of revenue is derived from the manufacture and distribution of metrology tools and equipment, saw blades and related products sold to distributors. The Company recognizes revenue for sales to our customers when transfer of control of the related good or service has occurred. All of the Company’s revenue was recognized under the point in time approach for the three and nine months ended March 31, 2021 and 2020. Contract terms with certain metrology equipment customers could result in products and services being transferred over time as a result of the customized nature of some of the Company’s products, together with contractual provisions in the customer contracts that provide the Company with an enforceable right to payment for performance completed to date; however, under typical terms, the Company does not have the right to consideration until the time of shipment from its manufacturing facilities or distribution centers, or until the time of delivery to its customers. If certain contracts in the future provide the Company with this enforceable right of payment, the timing of revenue recognition from products transferred to customers over time may be slightly accelerated compared to the Company’s right to consideration at the time of shipment or delivery. The Company’s typical payment terms vary based on the customer, geographic region, and the type of goods and services in the contract or purchase order. The period of time between invoicing and when payment is due is typically not significant. Amounts billed and due from the Company’s customers are classified as accounts receivable on the Consolidated Balance Sheets. As the Company’s standard payment terms are usually less than one year, the Company has elected the practical expedient under ASC paragraph 606-10-32-18 to not assess whether a contract has a significant financing component. The Company’s customers take delivery of goods, and they are recognized as revenue at the time of transfer of control to the customer, which is usually at the time of shipment, unless otherwise specified in the customer contract or purchase order. This determination is based on applicable shipping terms, as well as the consideration of other indicators, including timing of when the Company has a present right to payment, when physical possession of products is transferred to customers, when the customer has the asset, and provisions in contracts regarding customer acceptance. While unit prices are generally fixed, the Company provides variable consideration for certain customers, typically in the form of promotional incentives at the time of sale. The Company utilizes the most likely amount to estimate the effect of uncertainty on the amount of variable consideration to which the Company would be entitled. The most likely amount method considers the single most likely amount from a range of possible consideration amounts. The most likely amounts are based upon the contractual terms of the incentives and historical experience with each customer. The Company records estimates for cash discounts, promotional rebates, and other promotional allowances in the period the related revenue is recognized (“Customer Credits”). The provision for Customer Credits is recorded as a reduction from gross sales and reserves for Customer Credits are presented within accrued expenses on the Consolidated Balance Sheets. Actual Customer Credits have not differed materially from estimated amounts for each period presented. Amounts billed to customers for shipping and handling are included in net sales and costs associated with shipping and handling are included in cost of sales. The Company has concluded that its estimates of variable consideration are not constrained according to the definition within the new standard. Additionally, the Company applies the practical expedient in ASC paragraph 606-10-25-18B and accounts for shipping and handling activities that occur after the customer has obtained control of a good as a fulfillment activity, rather than a separate performance obligation.
Recently Issued Accounting Standards not yet adopted	Recently Issued Accounting Standards not yet adopted: In August 2018, the FASB issued ASU No. 2018-14, "Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans." ASU 2018-14 removes certain disclosures that are not considered cost beneficial, clarifies certain required disclosures and added additional disclosures. This ASU is effective for public companies for annual reporting periods and interim periods within those annual periods beginning after December 15, 2020, effective for the Company July 1, 2021.. The amendments in ASU 2018-14 must be applied on a retrospective basis. The Company is currently assessing the effect, if any, that ASU 2018-14 will have on its consolidated financial statements. In November 2019, FASB issued ASU 2019-10, which (1) provides a framework to stagger effective dates for future major accounting standards and (2) amends the effective dates of certain major new accounting standards. Of those standards affected the following is the only one not yet implemented by the Company. Financial Instruments Credit Losses ASU 2016-13 (ASC 326) and subsequent amendment to the guidance, ASU 2018-19 in November 2018. The standard significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. The amendment will affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. ASU 2018-19 clarifies that receivables arising from operating leases are accounted for using lease guidance and not as financial instruments. The amendments should be applied on either a prospective transition or modified-retrospective approach depending on the subtopic. This ASU is effective for annual periods beginning after December 15, 2019, and interim periods therein. Early adoption was permitted for annual periods beginning after December 15, 2018, and interim periods therein. This pronouncement was extended for Small Reporting Companies and for the Company beginning July 1, 2022. The Company does not expect the adoption of this standard to have a material impact on the financial position and results of operations. In December 2019, FASB issued ASU 2019-12, Income Taxes (Topic 740). The amendments in this Update simplify the accounting for income taxes by removing the following exceptions: a) Exception to the incremental approach for intra-period tax allocation when there is a loss from continuing operations and income or a gain from other items (for example, discontinued operations or other comprehensive income) b) Exception to the requirement to recognize a deferred tax liability for equity method investments when a foreign subsidiary becomes an equity method investment c) Exception to the ability not to recognize a deferred tax liability for a foreign subsidiary when a foreign equity method investment becomes a subsidiary d) Exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. The amendments in this Update also simplify the accounting for income taxes by doing the following: a) Requiring that an entity recognize a franchise tax (or similar tax) that is partially based on income as an income-based tax and account for any incremental amount incurred as a non-income-based tax. Requiring that an entity evaluate when a step up in the tax basis of goodwill should be considered part of the business combination in which the book goodwill was originally recognized and when it should be considered a separate transaction. b) Specifying that an entity is not required to allocate the consolidated amount of current and deferred tax expense to a legal entity that is not subject to tax in its separate financial statements. However, an entity may elect to do so (on an entity-by-entity basis) for a legal entity that is both not subject to tax and disregarded by the taxing authority. c) Requiring that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. d) Making minor Codification improvements for income taxes related to employee stock ownership plans and investments in qualified affordable housing projects accounted for using the equity method.. The amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020 or July 1, 2021 for the Company. The Company is currently assessing the effect, if any, on its consolidated financial statements. In March 2020, FASB issued ASU 2020-04, Reference Rate Reform (Topic 848). The amendments in this Update provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. Optional expedients and exceptions for applying generally accepted accounting principles (GAAP) to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this Update apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments in this Update apply to contract modifications that replace a reference rate affected by reference rate reform (including rates referenced in fallback provisions) and contemporaneous modifications of other contract terms related to the replacement of the reference rate (including contract modifications to add or change fallback provisions). The Company currently has no hedging type contracts or others tied to reference rates where this standard would have a material impact to the Company's accounting. The first amendment to the amended and restated loan and security agreement with TD Bank dated September 17, 2020 increased the maximum interest charged on the Line Of Credit from and annual interest rate of 2.25% plus LIBOR to 3.50% plus LIBOR, but ultimately our interest rate is capped accordingly in this agreement. The Company does not believe the adoption of this standard has a material impact on the financial position and results of operations.

Basis of Presentation and Summary of Significant Account Policies (Policies)

9 Months Ended

Mar. 31, 2021

The unaudited interim consolidated financial statements as of and for the nine months ended March 31, 2021 have been prepared by The L.S. Starrett Company (the “Company”) in accordance with accounting principles generally accepted in the United States of America for interim financial information and with the instructions of Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and notes required by generally accepted accounting principles for complete financial statements. These unaudited consolidated financial statements, which, in the opinion of management, reflect all adjustments (including normal recurring adjustments) necessary for a fair presentation, should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K for the year ended June 30, 2020. The balance sheet as of June 30, 2020 has been derived from the audited consolidated financial statements as of and for the year ended June 30, 2020. Operating results are not necessarily indicative of the results that may be expected for any future interim period or for the entire fiscal year. The Company’s “fiscal year” begins July 1st and ends June 30th.

The preparation of financial statements and related disclosures in conformity with accounting principles generally accepted in the United States of America requires management to make judgments, assumptions and estimates that affect amounts reported in the consolidated financial statements and accompanying notes. Note 2 to the Company’s consolidated financial statements included in the Annual Report on Form 10-K for the year ended June 30, 2020 describes the significant accounting policies and methods used in the preparation of the consolidated financial statements.

Potential Impairment Due to COVID-19

Throughout the COVID-19 pandemic crisis, the Company's main focus has been on protecting the health and well-being of its employees, and the long-term financial health of the Company. The COVID-19 pandemic continues to have a negative impact on certain sectors of the Company's Sales, particularly in Industrial and Capital Equipment markets. Products sold through Consumer channels, principally in Brazil, have returned to or even exceed pre-pandemic levels. Some uncertainty still exists when trying to predict a full recovery across the whole company.

Revenue from Contracts with Customers

The Company accounts for a contract or purchase order when it has approval and commitment from both parties, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability is probable. Revenue is recognized when control of the product passes to the customer, which is upon shipment, unless otherwise specified within the customer contract or on the purchase order as delivery, and is recognized at the amount that reflects the consideration the Company expects to receive for the products sold, including various forms of discounts. When revenue is recorded, estimates of returns are made and recorded as a reduction of revenue. Contracts with customers are evaluated to determine if there are separate performance obligations related to timing of product shipment that will be satisfied in different accounting periods. When that is the case, revenue is deferred until each performance obligation is met. No revenue was deferred as of March 31, 2021 and June 30, 2020. Purchase orders are of durations less than one year. As such, the Company applies the practical expedient in ASC paragraph 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less, for which work has not yet been performed.

Certain taxes assessed by governmental authorities on revenue producing transactions, such as value added taxes, are excluded from revenue and recorded on a net basis.

Performance Obligations

The Company’s primary source of revenue is derived from the manufacture and distribution of metrology tools and equipment, saw blades and related products sold to distributors. The Company recognizes revenue for sales to our customers when transfer of control of the related good or service has occurred. All of the Company’s revenue was recognized under the point in time approach for the three and nine months ended March 31, 2021 and 2020. Contract terms with certain metrology equipment customers could result in products and services being transferred over time as a result of the customized nature of some of the Company’s products, together with contractual provisions in the customer contracts that provide the Company with an

enforceable right to payment for performance completed to date; however, under typical terms, the Company does not have the right to consideration until the time of shipment from its manufacturing facilities or distribution centers, or until the time of delivery to its customers. If certain contracts in the future provide the Company with this enforceable right of payment, the timing of revenue recognition from products transferred to customers over time may be slightly accelerated compared to the Company’s right to consideration at the time of shipment or delivery.

The Company’s typical payment terms vary based on the customer, geographic region, and the type of goods and services in the contract or purchase order. The period of time between invoicing and when payment is due is typically not significant. Amounts billed and due from the Company’s customers are classified as accounts receivable on the Consolidated Balance Sheets. As the Company’s standard payment terms are usually less than one year, the Company has elected the practical expedient under ASC paragraph 606-10-32-18 to not assess whether a contract has a significant financing component.

The Company’s customers take delivery of goods, and they are recognized as revenue at the time of transfer of control to the customer, which is usually at the time of shipment, unless otherwise specified in the customer contract or purchase order. This determination is based on applicable shipping terms, as well as the consideration of other indicators, including timing of when the Company has a present right to payment, when physical possession of products is transferred to customers, when the customer has the asset, and provisions in contracts regarding customer acceptance.

While unit prices are generally fixed, the Company provides variable consideration for certain customers, typically in the form of promotional incentives at the time of sale. The Company utilizes the most likely amount to estimate the effect of uncertainty on the amount of variable consideration to which the Company would be entitled. The most likely amount method considers the single most likely amount from a range of possible consideration amounts. The most likely amounts are based upon the contractual terms of the incentives and historical experience with each customer. The Company records estimates for cash discounts, promotional rebates, and other promotional allowances in the period the related revenue is recognized (“Customer Credits”). The provision for Customer Credits is recorded as a reduction from gross sales and reserves for Customer Credits are presented within accrued expenses on the Consolidated Balance Sheets. Actual Customer Credits have not differed materially from estimated amounts for each period presented. Amounts billed to customers for shipping and handling are included in net sales and costs associated with shipping and handling are included in cost of sales. The Company has concluded that its estimates of variable consideration are not constrained according to the definition within the new standard. Additionally, the Company applies the practical expedient in ASC paragraph 606-10-25-18B and accounts for shipping and handling activities that occur after the customer has obtained control of a good as a fulfillment activity, rather than a separate performance obligation.

Recently Issued Accounting Standards not yet adopted

Recently Issued Accounting Standards not yet adopted:

In August 2018, the FASB issued ASU No. 2018-14, "Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans." ASU 2018-14 removes certain disclosures that are not considered cost beneficial, clarifies certain required disclosures and added additional disclosures. This ASU is effective for public companies for annual reporting periods and interim periods within those annual periods beginning after December 15, 2020, effective for the Company July 1, 2021.. The amendments in ASU 2018-14 must be applied on a retrospective basis. The Company is currently assessing the effect, if any, that ASU 2018-14 will have on its consolidated financial statements.

In November 2019, FASB issued ASU 2019-10, which (1) provides a framework to stagger effective dates for future major accounting standards and (2) amends the effective dates of certain major new accounting standards. Of those standards affected the following is the only one not yet implemented by the Company. Financial Instruments Credit Losses ASU 2016-13 (ASC 326) and subsequent amendment to the guidance, ASU 2018-19 in November 2018. The standard significantly changes how entities will measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The standard will replace today’s “incurred loss” approach with an “expected loss” model for instruments measured at amortized cost. The amendment will affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. ASU 2018-19 clarifies that receivables arising from operating leases are accounted for using lease guidance and not as financial instruments. The amendments should be applied on either a prospective transition or modified-retrospective approach depending on the subtopic. This ASU is effective for annual periods beginning after December 15, 2019, and interim periods therein. Early adoption was permitted for annual periods beginning after December 15, 2018, and interim periods therein. This pronouncement was extended for Small Reporting Companies and for the Company beginning July 1, 2022. The Company does not expect the adoption of this standard to have a material impact on the financial position and results of operations.

In December 2019, FASB issued ASU 2019-12, Income Taxes (Topic 740). The amendments in this Update simplify the accounting for income taxes by removing the following exceptions:

a) Exception to the incremental approach for intra-period tax allocation when there is a loss from continuing operations and income or a gain from other items (for example, discontinued operations or other comprehensive income)

b) Exception to the requirement to recognize a deferred tax liability for equity method investments when a foreign subsidiary becomes an equity method investment

c) Exception to the ability not to recognize a deferred tax liability for a foreign subsidiary when a foreign equity method investment becomes a subsidiary

d) Exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year.

The amendments in this Update also simplify the accounting for income taxes by doing the following:

a) Requiring that an entity recognize a franchise tax (or similar tax) that is partially based on income as an income-based tax and account for any incremental amount incurred as a non-income-based tax. Requiring that an entity evaluate when a step up in the tax basis of

goodwill should be considered part of the business combination in which the book goodwill was originally recognized and when it should be considered a separate transaction.

b) Specifying that an entity is not required to allocate the consolidated amount of current and deferred tax expense to a legal entity that is not subject to tax in its separate financial statements. However, an entity may elect to do so (on an entity-by-entity basis) for a legal entity that is both

not subject to tax and disregarded by the taxing authority.

c) Requiring that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date.

d) Making minor Codification improvements for income taxes related to employee stock ownership plans and investments in qualified affordable housing projects accounted for using the equity method..

The amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020 or July 1, 2021 for the Company. The Company is currently assessing the effect, if any, on its consolidated financial statements.

In March 2020, FASB issued ASU 2020-04, Reference Rate Reform (Topic 848). The amendments in this Update provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of)

reference rate reform on financial reporting. Optional expedients and exceptions for applying generally accepted accounting principles (GAAP) to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The amendments in this Update apply only to contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments in this Update apply to contract modifications that replace a reference rate affected by reference rate reform (including rates referenced in fallback provisions) and contemporaneous modifications of other contract terms related to the replacement of the reference rate (including contract modifications to add or change fallback provisions). The Company currently has no hedging type contracts or others tied to reference rates where this standard would have a material impact to the Company's accounting. The first amendment to the amended and restated loan and security agreement with TD Bank dated September 17, 2020 increased the maximum interest charged on the Line Of Credit from and annual interest rate of 2.25% plus LIBOR to 3.50% plus LIBOR, but ultimately our interest rate is capped accordingly in this agreement. The Company does not believe the adoption of this standard has a material impact on the financial position and results of operations.