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The maximum amount of common stock that a participant may accrue rights to purchase for each calendar year in which such right is outstanding.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Represents the maximum contribution percentage on eligible compensation by eligible employees under Employee Stock Purchase Plan.

No definition available.

Name:	pasg_EmployeeStockPurchasePlanMaximumEmployeeContributionPercentage
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Data Type:	num:percentItemType
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Period Type:	duration

Represents the period till which there is automatic annual increase in rights granted under the employee stock purchase plan.

No definition available.

Name:	pasg_EmployeeStockPurchasePlanPeriodTillWhichAutomaticIncreaseInRightsGranted
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Data Type:	xbrli:durationItemType
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Period Type:	duration

The stock purchase price percentage on the lower of the fair market value of the Company’s common stock on the first or last day of the respective offering period under the ESPP.

No definition available.

Name:	pasg_EmployeeStockPurchasePlanStockPurchasePricePercentage
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Period Type:	duration

Represents the number of equity incentive plans.

No definition available.

Name:	pasg_NumberOfEquityIncentivePlans
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Data Type:	xbrli:integerItemType
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Period Type:	duration

Represents the percentage of outstanding common shares to be taken as automatic annual increase in rights granted under the share based payment arrangement

No definition available.

Name:	pasg_ShareBasedPaymentArrangementPercentageOfOutstandingCommonSharesAsAutomaticIncrease
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Data Type:	num:percentItemType
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Represents the period till which there is automatic annual increase in rights granted under the share based payment arrangement.

No definition available.

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Data Type:	xbrli:durationItemType
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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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.

No definition available.

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Data Type:	xbrli:stringItemType
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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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