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Fair Value of Financial Instruments - Schedule of Contingent Liability (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($)
Contingent Liability |
Balance at the beginning | $ (9,300)
Remeasurement to fair value | 4,300
Balance at the beginning | $ (5,000)

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- Definition Contingent Liability, Fair Value + References No definition available. + Details
Name: | hpp_ContingentLiabilityFairValue
Namespace Prefix: | hpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Contingent Liability, Remeasurement + References No definition available. + Details
Name: | hpp_ContingentLiabilityRemeasurement
Namespace Prefix: | hpp_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Contingent Liability + References No definition available. + Details
Name: | hpp_ContingentLiabilityRollForward
Namespace Prefix: | hpp_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration