Summary of Significant Accounting Policies (Policies)	6 Months Ended
Sep. 30, 2023
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and ConsolidationThe accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all of the information and footnotes required by accounting principles generally accepted in the United States ("GAAP") for complete financial statements. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting of normal recurring accruals, necessary to present fairly the financial position of the Company at September 30, 2023, the Statements of (Loss) Income for the three and six months ended September 30, 2023 and 2022, and Cash Flows for the six months ended September 30, 2023 and 2022. The results of operations for the three and six months ended September 30, 2023 are not necessarily indicative of the operating results expected for the fiscal year ending March 31, 2024. These financial statements should be read in conjunction with the audited financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2023. The unaudited condensed consolidated financial statements include the accounts of PetMed Express, Inc. and its wholly owned subsidiaries. All significant intercompany transactions have been eliminated in consolidation.
Business Combinations	Business Combinations The Company accounts for its business combinations using the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") Topic 805 ("Business Combinations"). The purchase price is allocated to the fair value of the assets acquired and liabilities assumed. Transaction costs directly attributable to the acquisition are expensed as incurred. Identifiable assets and liabilities acquired or assumed are measured separately at their fair values as of the acquisition date. The excess of the purchase price of acquisition over the fair value of the identifiable net assets of the acquiree is recorded as goodwill. The results of businesses acquired in a business combination are included in the Company’s unaudited condensed consolidated financial statements from the date of acquisition. Determining the fair value of assets acquired and liabilities assumed requires management to use significant judgment and estimates, including the selection of valuation methodologies, estimates of future revenue and cash flows, discount rates and selection of comparable companies. The estimates and assumptions used to determine the fair values and useful lives of identified intangible assets could change due to numerous factors, including market conditions, technological developments, economic conditions, and competition. In connection with the determination of fair values, the Company may engage a third-party valuation specialist to assist with the valuation of intangible and certain tangible assets acquired and certain obligations assumed. Acquisition-related transaction costs incurred by the Company are not included as a component of consideration transferred but are accounted for as an operating expense in the period in which the costs are incurred.
Use of Estimates	Use of Estimates The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The carrying amounts of the Company's cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term nature of these instruments.
Deferred Revenue	Deferred Revenue Deferred revenue is recorded when payments are received or due in advance of performing our service obligations and revenue is recognized over the service period. Deferred revenue represents prepayments of PetPlus memberships with PetCareRx, Inc. (“PetCareRx”). The total deferred revenue as of September 30, 2023 for these memberships was $3.6 million. Memberships provide discounted pricing, free standard shipping, veterinary telehealth services and local Caremark Pharmacy prescription pickup. The membership fee is an annual charge and automatically renews one year from the initial enrollment date. The Company generally recognizes the revenue ratably over the term of the membership.
Goodwill	Goodwill Goodwill represents the excess of the purchase price over the fair value of net assets acquired in a business combination. Goodwill is not amortized but instead is tested for impairment annually on January 1, or more frequently if events or changes in circumstances indicate goodwill might be impaired. When testing goodwill for impairment, the Company has the option to choose whether it will apply a qualitative assessment first and then a quantitative assessment, if necessary, or to apply the quantitative assessment directly. The Company has concluded that it has one reporting unit and has assigned the entire balance of goodwill to this reporting unit.
Intangible Assets	Intangible AssetsThe Company acquired definite-lived intangible assets in the acquisition (see Note 3) that will be amortized based on their estimated useful lives in accordance with ASC Topic 350 (“Goodwill and Other Intangible Assets”). These definite-lived intangible assets are being amortized over periods ranging from three to seven years. Acquired trade name is not being amortized and is subject to an annual review for impairment consistent with the existing intangible assets in fiscal 2024.
Leases	Leases The Company accounts for leases in accordance with ASC Topic 842 ("Leases"). The Company reviews all contracts and determines if the arrangement is or contains a lease, at inception. Operating leases are reported as right-of-use (“ROU”) assets, current lease liabilities and long-term lease liabilities on the unaudited Condensed Consolidated Balance Sheets. The Company does not have any have any material leases, individually or in the aggregate, classified as a finance lease. Operating lease ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. The Company uses its estimated incremental borrowing rate based on the information available at the lease commencement date in determining the present value of future payments. The operating lease ROU asset also includes any upfront lease payments made and excludes lease incentives and initial direct costs incurred. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. Leases with a term of 12 months or less are not recorded on the balance sheet. The Company’s lease agreements do not contain any residual value guarantees.
Recent Accounting Pronouncements	Recent Accounting Pronouncements The Company does not believe that any recently issued, but not yet effective, accounting standards, if currently adopted, will have a material effect on the Company's consolidated financial position, results of operations, or cash flows.

Summary of Significant Accounting Policies (Policies)

6 Months Ended

Sep. 30, 2023

Basis of Presentation and ConsolidationThe accompanying unaudited condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q and, therefore, do not include all of the information and footnotes required by accounting principles generally accepted in the United States ("GAAP") for complete financial statements. In the opinion of management, the accompanying unaudited condensed consolidated financial statements contain all adjustments, consisting of normal recurring accruals, necessary to present fairly the financial position of the Company at September 30, 2023, the Statements of (Loss) Income for the three and six months ended September 30, 2023 and 2022, and Cash Flows for the six months ended September 30, 2023 and 2022. The results of operations for the three and six months ended September 30, 2023 are not necessarily indicative of the operating results expected for the fiscal year ending March 31, 2024. These financial statements should be read in conjunction with the audited financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2023. The unaudited condensed consolidated financial statements include the accounts of PetMed Express, Inc. and its wholly owned subsidiaries. All significant intercompany transactions have been eliminated in consolidation.

Business Combinations

The Company accounts for its business combinations using the acquisition method of accounting in accordance with Accounting Standards Codification ("ASC") Topic 805 ("Business Combinations"). The purchase price is allocated to the fair value of the assets acquired and liabilities assumed. Transaction costs directly attributable to the acquisition are expensed as incurred. Identifiable assets and liabilities acquired or assumed are measured separately at their fair values as of the acquisition date. The excess of the purchase price of acquisition over the fair value of the identifiable net assets of the acquiree is recorded as goodwill. The results of businesses acquired in a business combination are included in the Company’s unaudited condensed consolidated financial statements from the date of acquisition.

Determining the fair value of assets acquired and liabilities assumed requires management to use significant judgment and estimates, including the selection of valuation methodologies, estimates of future revenue and cash flows, discount rates and selection of comparable companies. The estimates and assumptions used to determine the fair values and useful lives of identified intangible assets could change due to numerous factors, including market conditions, technological developments, economic conditions, and competition. In connection with the determination of fair values, the Company may engage a third-party valuation specialist to assist with the valuation of intangible and certain tangible assets acquired and certain obligations assumed. Acquisition-related transaction costs incurred by the Company are not included as a component of consideration transferred but are accounted for as an operating expense in the period in which the costs are incurred.

Use of Estimates

Use of Estimates The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ materially from those estimates.

Fair Value of Financial Instruments

Fair Value of Financial Instruments The carrying amounts of the Company's cash and cash equivalents, accounts receivable, and accounts payable approximate fair value due to the short-term nature of these instruments.

Deferred Revenue

Deferred revenue is recorded when payments are received or due in advance of performing our service obligations and revenue is recognized over the service period. Deferred revenue represents prepayments of PetPlus memberships with PetCareRx, Inc. (“PetCareRx”). The total deferred revenue as of September 30, 2023 for these memberships was $3.6 million. Memberships provide discounted pricing, free standard shipping, veterinary telehealth services and local Caremark Pharmacy prescription pickup. The membership fee is an annual charge and automatically renews one year from the initial enrollment date. The Company generally recognizes the revenue ratably over the term of the membership.

Goodwill

Goodwill represents the excess of the purchase price over the fair value of net assets acquired in a business combination. Goodwill is not amortized but instead is tested for impairment annually on January 1, or more frequently if events or changes in circumstances indicate goodwill might be impaired. When testing goodwill for impairment, the Company has the option to choose whether it will apply a qualitative assessment first and then a quantitative assessment, if necessary, or to apply the quantitative assessment directly. The Company has concluded that it has one reporting unit and has assigned the entire balance of goodwill to this reporting unit.

Intangible Assets

Intangible AssetsThe Company acquired definite-lived intangible assets in the acquisition (see Note 3) that will be amortized based on their estimated useful lives in accordance with ASC Topic 350 (“Goodwill and Other Intangible Assets”). These definite-lived intangible assets are being amortized over periods ranging from three to seven years. Acquired trade name is not being amortized and is subject to an annual review for impairment consistent with the existing intangible assets in fiscal 2024.

Leases

The Company accounts for leases in accordance with ASC Topic 842 ("Leases"). The Company reviews all contracts and determines if the arrangement is or contains a lease, at inception. Operating leases are reported as right-of-use (“ROU”) assets, current lease liabilities and long-term lease liabilities on the unaudited Condensed Consolidated Balance Sheets. The Company does not have any have any material leases, individually or in the aggregate, classified as a finance lease.

Operating lease ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the Company’s obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. The Company uses its estimated incremental borrowing rate based on the information available at the lease commencement date in determining the present value of future payments. The operating lease ROU asset also includes any upfront lease payments made and excludes lease incentives and initial direct costs incurred. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term. Leases with a term of 12 months or less are not recorded on the balance sheet. The Company’s lease agreements do not contain any residual value guarantees.

Recent Accounting Pronouncements

Recent Accounting Pronouncements The Company does not believe that any recently issued, but not yet effective, accounting standards, if currently adopted, will have a material effect on the Company's consolidated financial position, results of operations, or cash flows.