Deductible receivables for open case reserves.

No definition available.

Name:	ptvc_DeductibleReceivablesOpenCaseReserves
Namespace Prefix:	ptvc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The reserve held to pay deductible obligations for open cases.

+ References

No definition available.

+ Details

Name:	ptvc_LiabilityUnpaidClaimsReserves
Namespace Prefix:	ptvc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The percentage of open case reserves required as collateral.

+ References

No definition available.

+ Details

Name:	ptvc_OpenCaseReservesCollateral
Namespace Prefix:	ptvc_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of a loss fund held for the payment of claims.

+ References

No definition available.

+ Details

Name:	ptvc_ReinsuranceLossFund
Namespace Prefix:	ptvc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The per claim deductible amount required for workers compensation insurance.

+ References

No definition available.

+ Details

Name:	ptvc_WorkersCompensationInsurancePerClaimDeductibleAmount
Namespace Prefix:	ptvc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_LossContingencyAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14557-108349

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14435-108349

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

+ Details

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

- Definition

Amount, after valuation allowance, recoverable under reinsurance contracts including premium paid under reinsurance contracts. Examples include, but are not limited to, settled and unsettled claims, incurred but not reported losses, loss adjustment expense, premium paid, policy benefits and policy reserves.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.(a),6)
-URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=99397103&loc=d3e6824-158387

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 310
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=99404803&loc=d3e21409-158489

+ Details

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

- Details

Name:	srt_LitigationCaseAxis=ptvc_PersonnelStaffingGroupDBAMVPStaffingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Litigation, Commitments and Contingencies (Details) - USD ($) $ in Thousands		6 Months Ended
	Jul. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Loss Contingency [Abstract]
Estimated recoverable amount		$ 410,445	$ 392,436
Personnel Staffing Group d/b/a MVP Staffing [Member]
Loss Contingency [Abstract]
Per claim deductible amount		500
Open case reserves		20,000
Deductible receivables		$ 1,800
Percentage of required collateral		110.00%
Estimated recoverable amount		$ 40,000
Personnel Staffing Group d/b/a MVP Staffing [Member] \| Minimum [Member]
Loss Contingency [Abstract]
Loss fund		$ 4,000
Personnel Staffing Group d/b/a MVP Staffing [Member] \| Subsequent Event [Member]
Loss Contingency [Abstract]
Damages sought	$ 0