SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	6 Months Ended
Sep. 30, 2020
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 3 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Principles of Consolidation The Condensed Consolidated Financial Statements include the accounts of Orion Energy Systems, Inc. and its wholly owned subsidiaries. Basis of Presentation The accompanying unaudited Condensed Consolidated Financial Statements of Orion have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information and with the rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. Interim results are not necessarily indicative of results that may be expected for the fiscal year ending March 31, 2021 or other interim periods. The Condensed Consolidated Balance Sheet at March 31, 2020 has been derived from the audited consolidated financial statements at that date but does not include all of the information required by GAAP for complete financial statements. The accompanying unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in Orion’s Annual Report on Form 10-K for the fiscal year ended March 31, 2020 filed with the SEC on June 5, 2020. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during that reporting period. Areas that require the use of significant management estimates include revenue recognition, inventory obsolescence and allowance for doubtful accounts, accruals for warranty and loss contingencies, income taxes, impairment analyses, and certain equity transactions. Accordingly, actual results could differ from those estimates. Concentration of Credit Risk and Other Risks and Uncertainties Orion's cash is deposited with two financial institutions. At times, deposits in these institutions exceed the amount of insurance provided on such deposits. Orion has not experienced any losses in such accounts and believes that it is not exposed to any significant financial institution viability risk on these balances. Orion purchases components necessary for its lighting products, including ballasts, lamps and LED components, from multiple suppliers. For the three months ended September 30, 2020, one supplier accounted for 10.3% of total cost of revenue. For the six months ended September 30, 2020, no supplier accounted for more than 10% of total cost of revenue. For the three months ended September 30, 2019, two suppliers accounted for 17.2% and 10.0% of total cost of revenue, respectively. For the six months ended September 30, 2019, one supplier accounted for 15.5% of total cost of revenue For the three months ended September 30, 2020, one customer accounted for 60.7% of total revenue. For the six months ended September 30, 2020, two customers accounted for 44.4% and 14.9% of total revenue, respectively. For the three months ended September 30, 2019, one customer accounted for 81.1% of total revenue. For the six months ended September 30, 2019, one customer accounted for 79.2% of total revenue. As of September 30, 2020, one customer accounted for 70.9 % of accounts receivable. As of March 31, 2020, two customers accounted for 37.3% and 13.0% of accounts receivable, respectively. Recent Accounting Pronouncements Issued: Not Yet Adopted In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which requires an entity to assess impairment of its financial instruments based on its estimate of expected credit losses. Since the issuance of ASU 2016-13, the FASB released several amendments to improve and clarify the implementation guidance. The provisions of ASU 2016-13 and the related amendments are effective for Orion for fiscal years (and interim reporting periods within those years) beginning after December 15, 2022. Entities are required to apply these changes through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Orion is currently evaluating the impact of adoption of this standard on its consolidated statements of operations, cash flows, and the related footnote disclosures. In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes by removing certain exceptions to the general rules of Topic 740. The provisions of ASU 2019-12 are effective for Orion for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Orion is currently evaluating the impact of adoption on this standard on its consolidated statements of operations, cash flows, and the related footnote disclosures.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

6 Months Ended

Sep. 30, 2020

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 3 — SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation

The Condensed Consolidated Financial Statements include the accounts of Orion Energy Systems, Inc. and its wholly owned subsidiaries.

Basis of Presentation

The accompanying unaudited Condensed Consolidated Financial Statements of Orion have been prepared in accordance with accounting principles generally accepted in the United States (GAAP) for interim financial information and with the rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments, consisting of normal recurring adjustments, considered necessary for a fair presentation have been included. Interim results are not necessarily indicative of results that may be expected for the fiscal year ending March 31, 2021 or other interim periods.

The Condensed Consolidated Balance Sheet at March 31, 2020 has been derived from the audited consolidated financial statements at that date but does not include all of the information required by GAAP for complete financial statements.

The accompanying unaudited Condensed Consolidated Financial Statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in Orion’s Annual Report on Form 10-K for the fiscal year ended March 31, 2020 filed with the SEC on June 5, 2020.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during that reporting period. Areas that require the use of significant management estimates include revenue recognition, inventory obsolescence and allowance for doubtful accounts, accruals for warranty and loss contingencies, income taxes, impairment analyses, and certain equity transactions. Accordingly, actual results could differ from those estimates.

Concentration of Credit Risk and Other Risks and Uncertainties

Orion's cash is deposited with two financial institutions. At times, deposits in these institutions exceed the amount of insurance provided on such deposits. Orion has not experienced any losses in such accounts and believes that it is not exposed to any significant financial institution viability risk on these balances.

Orion purchases components necessary for its lighting products, including ballasts, lamps and LED components, from multiple suppliers. For the three months ended September 30, 2020, one supplier accounted for 10.3% of total cost of revenue. For the six months ended September 30, 2020, no supplier accounted for more than 10% of total cost of revenue. For the three months ended September 30, 2019, two suppliers accounted for 17.2% and 10.0% of total cost of revenue, respectively. For the six months ended September 30, 2019, one supplier accounted for 15.5% of total cost of revenue

For the three months ended September 30, 2020, one customer accounted for 60.7% of total revenue. For the six months ended September 30, 2020, two customers accounted for 44.4% and 14.9% of total revenue, respectively. For the three months ended September 30, 2019, one customer accounted for 81.1% of total revenue. For the six months ended September 30, 2019, one customer accounted for 79.2% of total revenue.

As of September 30, 2020, one customer accounted for 70.9 % of accounts receivable. As of March 31, 2020, two customers accounted for 37.3% and 13.0% of accounts receivable, respectively.

Recent Accounting Pronouncements

Issued: Not Yet Adopted

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASU 2016-13”), which requires an entity to assess impairment of its financial instruments based on its estimate of expected credit losses. Since the issuance of ASU 2016-13, the FASB released several amendments to improve and clarify the implementation guidance. The provisions of ASU 2016-13 and the related amendments are effective for Orion for fiscal years (and interim reporting periods within those years) beginning after December 15, 2022. Entities are required to apply these changes through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. Orion is currently evaluating the impact of adoption of this standard on its consolidated statements of operations, cash flows, and the related footnote disclosures.

In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which simplifies the accounting for income taxes by removing certain exceptions to the general rules of Topic 740. The provisions of ASU 2019-12 are effective for Orion for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Orion is currently evaluating the impact of adoption on this standard on its consolidated statements of operations, cash flows, and the related footnote disclosures.