Accrued Expenses and Other Current Liabilities - Major classifications of accrued expenses and other current liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Payables and Accruals [Abstract]
Accrued sales tax	$ 465us-gaap_SalesAndExciseTaxPayableCurrent	$ 478us-gaap_SalesAndExciseTaxPayableCurrent
Accrued credit card fees	285pets_AccruedCreditCardFeesCurrent	275pets_AccruedCreditCardFeesCurrent
Accrued salaries and benefits	741us-gaap_AccruedEmployeeBenefitsCurrent	754us-gaap_AccruedEmployeeBenefitsCurrent
Accrued professional expenses	225us-gaap_AccruedProfessionalFeesCurrent	275us-gaap_AccruedProfessionalFeesCurrent
Accrued sales return allowance	147	143
Accrued dividends payable	212us-gaap_DividendsPayableCurrent	262us-gaap_DividendsPayableCurrent
Other accrued liabilities	139us-gaap_OtherAccruedLiabilitiesCurrent	138us-gaap_OtherAccruedLiabilitiesCurrent
Accrued expenses and other current liabilities	$ 2,214	$ 2,325

Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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