Debt - Narrative (Details) - USD ($) $ in Millions		6 Months Ended
Apr. 13, 2021	Jun. 30, 2022
Senior Secured Asset-Based Revolving Credit Facility
Debt
Maximum borrowing capacity	$ 125.0
Line of credit facility contingent increase, additional borrowing capacity	$ 50.0
Eligible investment - grade accounts	90.00%
Percentage of eligible investment other accounts	85.00%
Percentage of net orderly liquidation value of cost of certain eligible on hand and in transit inventory	85.00%
Percentage of qualified cash	100.00%
Line of credit facility, interest rate at period end		2.89%
Unused facility fee (as a percent)		0.35%
Senior Secured Term Loan Facility
Debt
Maximum borrowing capacity	$ 300.0
Line of credit facility, interest rate at period end		5.50%
Floor rate	0.50%
Percentage of periodic payment, principal		0.25%
Senior Secured Term Loan Facility \| LIBOR \| Minimum
Debt
Variable interest rate, basis points spread over variable reference rate (as a percent)	3.25%
Senior Secured Term Loan Facility \| LIBOR \| Maximum
Debt
Variable interest rate, basis points spread over variable reference rate (as a percent)	4.25%
Notes Payable Vip Acquisition
Debt
Wrote off deferred financing fees to loss on debt extinguishment		$ 5.5
Transaction cost on termination of debt instrument		$ 0.9

Percentage of eligible investment grade accounts used in the calculation of borrowing base of debt instrument.

No definition available.

Name:	petq_DebtInstrumentBorrowingBasePercentageOfEligibleInvestmentGradeAccounts
Namespace Prefix:	petq_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of eligible other accounts used in the calculation of borrowing base of debt instrument.

+ References

No definition available.

+ Details

Name:	petq_DebtInstrumentBorrowingBasePercentageOfEligibleOtherAccounts
Namespace Prefix:	petq_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of net orderly liquidation value of the cost of certain eligible on hand and in-transit inventory used in the calculation of borrowing base of debt instrument.

+ References

No definition available.

+ Details

Name:	petq_DebtInstrumentBorrowingBasePercentageOfNetOrderlyLiquidationValueOfCostOfCertainEligibleOnHandAndInTransitInventory
Namespace Prefix:	petq_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The floor rate of the debt instrument.

+ References

No definition available.

+ Details

Name:	petq_DebtInstrumentFloorRate
Namespace Prefix:	petq_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of the periodic payments applied to principal balance of debt.

+ References

No definition available.

+ Details

Name:	petq_DebtInstrumentPercentageOfPeriodicPaymentPrincipal
Namespace Prefix:	petq_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The qualified cash under the debt instrument covenant.

+ References

No definition available.

+ Details

Name:	petq_DebtInstrumentPercentageOfQualifiedCash
Namespace Prefix:	petq_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The transaction cost on termination of debt instrument.

+ References

No definition available.

+ Details

Name:	petq_DebtInstrumentTerminationTransactionCosts
Namespace Prefix:	petq_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The contingent increase above the maximum borrowing capacity under the credit facility, if any one or more of the existing banks or new banks agree to provide such increased commitment amount.

+ References

No definition available.

+ Details

Name:	petq_LineOfCreditFacilityContingentIncreaseAdditionalBorrowingCapacity
Namespace Prefix:	petq_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate at the end of the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateAtPeriodEnd
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227

+ Details

Name:	us-gaap_WriteOffOfDeferredDebtIssuanceCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=petq_SeniorSecuredAssetBasedRevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=petq_SeniorSecuredTermLoanFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=petq_NotesPayableVIPAcquisitionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: