XML 62 R51.htm IDEA: XBRL DOCUMENT v3.8.0.1

CONVERTIBLE BRIDGE NOTES (2017 New Bridge Notes II) (Details) - USD ($)			1 Months Ended	3 Months Ended		9 Months Ended
	Aug. 28, 2017	Jun. 29, 2017	Mar. 31, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jun. 13, 2017	Dec. 31, 2016	Jun. 30, 2016
Short-term Debt [Line Items]
Underlying shares (in shares)				4,224,824		4,224,824				1,958,204
Exercise price (in dollars per share)			$ 0
Warrants, fair value		$ 211,000		$ 211,000		$ 211,000				$ 1,421,738
Class of warrant or right, term			10 years
Merger advisory fees				73,000	$ 0	2,676,000	$ 0
Proceeds from equity financing				7,000,000
Total debt				$ 42,000		$ 42,000			$ 4,522,000
Side Warrants
Short-term Debt [Line Items]
Underlying shares (in shares)				91,429		91,429
Exercise price (in dollars per share)				$ 7		$ 7
Warrants, fair value				$ 487,000		$ 487,000
Merger advisory fees				$ 73,000		$ 487,000
Common Stock
Short-term Debt [Line Items]
Conversion price (in dollars per share)								$ 10.2502
Underlying shares (in shares)		45,600
Exercise price (in dollars per share)	$ 2.75	$ 7.50
Common Stock | Side Warrants
Short-term Debt [Line Items]
Underlying shares (in shares)				91,429		91,429
Exercise price (in dollars per share)				$ 7.00		$ 7.00
Warrants, fair value				$ 487,000		$ 487,000
Class of warrant or right, term						5 years
Merger advisory fees				$ 73,000		$ 487,000
Common Stock | Side Warrants | Upon Execution
Short-term Debt [Line Items]
Underlying shares (in shares)				22,857		22,857
Common Stock | Side Warrants | Performance Based
Short-term Debt [Line Items]
Underlying shares (in shares)				68,572		68,572
Bridge Loan
Short-term Debt [Line Items]
Premium rate changed upon settlement of debt	20.00%
Total debt	$ 2,436,551
Bridge Loan | Common Stock
Short-term Debt [Line Items]
Conversion price (in dollars per share)	$ 2.50
Exercise price (in dollars per share)	$ 3.00
Class of warrant or right, term	5 years
Bridge Loan | 2017 New Bridge Notes II
Short-term Debt [Line Items]
Sale of debt		$ 800,000
Proceeds from sale of debt instrument		$ 721,000
Interest rate (as a percent)		8.00%
Conversion price (in dollars per share)		$ 3.736329
Premium rate changed upon settlement of debt		20.00%
Premium on debt settlement		$ 160,000
Discount on debt				$ 656,000		$ 656,000

X

- Definition

Class of Warrant or Right, Term

+ References

No definition available.

+ Details

Name:	prpo_ClassofWarrantorRightTerm
Namespace Prefix:	prpo_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

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

Premium Rate on Debt Settlement

+ References

No definition available.

+ Details

Name:	prpo_PremiumRateonDebtSettlement
Namespace Prefix:	prpo_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Premium on Debt Settlement, Amount

+ References

No definition available.

+ Details

Name:	prpo_PremiumRateonDebtSettlementAmount
Namespace Prefix:	prpo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Proceeds From the Sales of Debt Instrument

+ References

No definition available.

+ Details

Name:	prpo_ProceedsFromtheSalesofDebtInstrument
Namespace Prefix:	prpo_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

For transactions that are recognized separately from the acquisition of assets and assumptions of liabilities in the business combination, such as related to pre-existing relationships with the acquiree, this element represents the disclosure of the amount of acquisition related costs which have been expensed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessCombinationSeparatelyRecognizedTransactionsAdditionalDisclosuresAcquisitionCostExpensed
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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 the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ 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)(2))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_DebtAndCapitalLeaseObligations
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of debt discount to be amortized within one year or within the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28541-108399

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscountCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

Name:	us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ 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_ProceedsFromIssuanceOrSaleOfEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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_ShortTermDebtLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Fair value portion of warrants not settleable in cash classified as equity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

+ Details

Name:	us-gaap_WarrantsNotSettleableInCashFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_ClassOfWarrantOrRightAxis=prpo_SideWarrantMember
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_AwardTypeAxis=prpo_UponExecutionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AwardTypeAxis=us-gaap_PerformanceSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ShortTermDebtTypeAxis=us-gaap_BridgeLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=prpo_A2017NewBridgeNotesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: