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

Reduction in Certain Accrued Expense and Accounts Payable

No definition available.

Name:	prpo_ReductionInCertainAccruedExpenseAndAccountsPayable
Namespace Prefix:	prpo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration