XML 89 R77.htm IDEA: XBRL DOCUMENT
v3.8.0.1

STOCKHOLDERS' EQUITY (DEFICIT) (Series B Preferred Stock) (Details) - USD ($) |  |  | 1 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 29, 2017 | Apr. 28, 2017 | Nov. 30, 2017 | Aug. 31, 2017 | Dec. 31, 2017 | Oct. 31, 2017 | Aug. 25, 2017 | Dec. 31, 2016 | Jun. 30, 2016
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  |  | $ 0.01 |  |  | $ 0.01 |
Exercise price (in dollars per share) |  |  |  |  |  |  |  |  | $ 0.00
Proceeds from Issuance of preferred stock |  |  |  |  | $ 7,784,000 |  |  |  |
Number of shares converted (in shares) |  |  |  | 1,735,419 |  |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  | 15,000,000 |  |  | 1,294,434 |
Preferred stock, shares outstanding (in shares) |  |  |  |  | 4,935 |  |  | 780,105 |
Preferred stock, shares issued (in shares) |  |  |  |  | 4,935 |  |  | 780,105 |
Aegis |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  | $ 0.01 |  |  |  |  |
Share price (in dollars per share) |  |  |  | $ 1,000 |  |  |  |  |
Stock rights issued (in shares) |  |  |  | 280,000 |  |  |  |  |
Warrant unit value (per unit) |  |  |  | $ 2,800 |  |  |  |  |
Proceeds from issuance of warrants |  |  |  | $ 5,000,000 |  |  |  |  |
Offering Warrants [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Stock rights issued (in shares) |  |  |  | 2,680,000 |  |  |  |  |
Exercise price (in dollars per share) |  |  | $ 1.40 | $ 3.00 |  |  |  |  |
Preferred Class B |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Preferred stock, par value (in dollars per share) |  |  |  |  |  |  | $ 0.01 |  |
Shares callable by warrant (in shares) |  |  |  | 400 |  |  |  |  |
Conversion price (in dollars per share) |  |  | $ 1.40 | $ 2.50 |  | $ 2.50 |  |  |
Share price (in dollars per share) |  | $ 1,000 |  |  |  |  |  |  |
Beneficial conversion feature on warrants |  |  | $ 2,000,000 |  |  |  |  |  |
Number of shares converted (in shares) |  |  |  |  | 3,613 |  |  |  |
Preferred stock, shares authorized (in shares) |  |  |  |  | 6,900 |  | 6,900 |  |
Preferred stock, shares outstanding (in shares) |  |  |  |  | 2,387 |  |  |  |
Preferred stock, shares issued (in shares) |  |  |  |  | 6,900 |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  |  |  |  |  | $ 1,000 |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares callable by warrant (in shares) |  | 400 |  |  |  |  |  |  |
Stock rights issued (in shares) |  |  |  | 856,446 |  |  |  |  |
Exercise price (in dollars per share) | $ 7.50 |  |  |  |  |  |  |  |
Number of shares converted (in shares) | 5,352,847 |  |  |  |  |  |  |  |
Public Stock Offering |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares sold in offering (in shares) |  | 6,000 |  |  |  |  |  |  |
Sale of stock, number of warrants per unit (in shares) |  | 1 |  |  |  |  |  |  |
Proceeds from Issuance of preferred stock |  |  | 2,800,000 | $ 6,000,000 |  |  |  |  |
Beneficial conversion feature on warrants |  |  |  | 2,300,000 |  |  |  |  |
Public Stock Offering | Offering Warrants [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Proceeds from Issuance of preferred stock |  |  | $ 1,300,000 | $ 2,900,000 |  |  |  |  |
Public Stock Offering | Preferred Class B |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Shares sold in offering (in shares) |  |  |  | 6,000 |  |  |  |  |
Proceeds from Issuance of preferred stock |  |  |  | $ 3,100,000 |  |  |  |  |
Preferred Class B |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Sale of stock, number of shares per unit (in shares) |  | 1 |  |  |  |  |  |  |
Preferred Class B | Common Stock [Member] |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |
Number of shares converted (in shares) |  |  |  |  | 1,550,485 |  |  |  |

X
- Definition Beneficial Conversion Feature on Conversion of Warrants + References No definition available. + Details
Name: | prpo_BeneficialConversionFeatureonConversionofWarrants
Namespace Prefix: | prpo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Class of Warrant or Right, Number of Issued Warrants or Rights + References No definition available. + Details
Name: | prpo_ClassOfWarrantOrRightNumberOfIssuedWarrantsOrRights
Namespace Prefix: | prpo_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Class of Warrant or Right, Unit Value of Warrants or Rights + References No definition available. + Details
Name: | prpo_ClassofWarrantorRightUnitValueofWarrantsorRights
Namespace Prefix: | prpo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Conversion of Stock, Per Share Conversion Price + References No definition available. + Details
Name: | prpo_ConversionofStockPerShareConversionPrice
Namespace Prefix: | prpo_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Sale of Stock, Number of Shares Issued Per Unit + References No definition available. + Details
Name: | prpo_SaleofStockNumberofSharesIssuedPerUnit
Namespace Prefix: | prpo_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sale of Stock, Number of Warrants Issued Per Unit + References No definition available. + Details
Name: | prpo_SaleofStockNumberofWarrantsIssuedPerUnit
Namespace Prefix: | prpo_
Data Type: | xbrli:sharesItemType
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_ClassOfStockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(i)(4)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares. + References No definition available. + Details
Name: | us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 + Details
Name: | us-gaap_ConversionOfStockSharesConverted1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21484-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
Name: | us-gaap_PreferredStockLiquidationPreference
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Proceeds from issuance of capital stock which provides for a specific dividend that is paid to the shareholders before any dividends to common stockholders and which takes precedence over common stockholders in the event of liquidation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The cash inflow from issuance of rights to purchase common shares at predetermined price (usually issued together with corporate debt). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfWarrants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The number of shares issued or sold by the subsidiary or equity method investee per stock transaction. + References No definition available. + Details
Name: | us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=prpo_AegisCapitalCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ClassOfWarrantOrRightAxis=prpo_OfferingWarrantsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_PreferredClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=prpo_PublicStockOfferingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PreferredClassBMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |