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v3.23.1

ACCRUED EXPENSES OTHER CURRENT LIABILITIES (Narrative) (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Maximum [Member] |  |
Reduction in Certain Accrued Expense and Accounts Payable | $ 0 | $ 1,000

X
- Definition Reduction in Certain Accrued Expense and Accounts Payable + References No definition available. + Details
Name: | prpo_ReductionInCertainAccruedExpenseAndAccountsPayable
Namespace Prefix: | prpo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |