XML 39 R27.htm IDEA: XBRL DOCUMENT
v3.22.1

CONVERTIBLE NOTES (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2021
Debt Instrument [Line Items] |
Schedule of debt | Long-term debt consists of the following:
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Dollars in Thousands
​ |  | December 31, 2021 |  | December 31, 2020
Department of Economic and Community Development (DECD) | ​ | $ | 205 | ​ | $ | 233
DECD debt issuance costs | ​ |  | (19) | ​ |  | (22)
Financed insurance loan | ​ |  | — | ​ |  | 12
Paycheck Protection Program | ​ | ​ | — | ​ | ​ | 787
Total long-term debt | ​ |  | 186 | ​ |  | 1,010
Current portion of long-term debt | ​ |  | (26) | ​ |  | (648)
Long-term debt, net of current maturities | ​ | $ | 160 | ​ | $ | 362
Convertible Bridge Loan |
Debt Instrument [Line Items] |
Summary of change in Bridge Note debt discounts and debt premiums | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
(Dollars in thousands) | ​ | For the Year Ended December 31,
​ | ​ | 2020
​ | ​ | ​ | Debt Discounts | ​ | ​ | Debt Premiums
Beginning balance at January 1 | ​ | $ | (1,796) | ​ | $ | —
Additions: | ​ |  | — | ​ |  | 793
Deductions: | ​ | ​ | ​ | ​ | ​ | ​
Amortization (accretion) (1) | ​ | ​ | 703 | ​ | ​ | (385)
Write-off related to note conversions (2) | ​ | ​ | 138 | ​ | ​ | (408)
Write-off related to note extinguishment (3) | ​ | ​ | 955 | ​ | ​ | —
Balance at December 31 | ​ | $ | — | ​ | $ | —
| (1) | Amortization/accretion is recognized as interest expense/income within the consolidated statements of operations based on the effective interest method.
| (2) | Write-offs associated with note conversions are recognized as an offset to additional paid-in capital at the time of the conversion.
| (3) | Write-offs associated with note extinguishment are recognized as a loss and included in loss on extinguishment of convertible notes in the consolidated statements of operations.

X
- Definition The tabular disclosure of debt discount and premiums. + References No definition available. + Details
Name: | prpo_ScheduleOfDebtDiscountsAndDebtPremiumsTableTextBlock
Namespace Prefix: | prpo_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- 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

X
- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
Name: | us-gaap_ScheduleOfDebtTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=prpo_ConvertibleBridgeLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |