Number Of Individuals Granted Share-Based Compensation Awards

No definition available.

Name:	prgx_NumberOfIndividualsGrantedShareBasedCompensationAwards
Namespace Prefix:	prgx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

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

- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

Name:	us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_EmployeeInducementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_DirectorGroupIncomingDirector2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_DirectorGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_DirectorGroupTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_EmployeeGroupMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

- Details

Name:	us-gaap_TitleOfIndividualAxis=us-gaap_ChiefExecutiveOfficerMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_TitleOfIndividualAxis=prgx_DirectorGroupIncomingDirectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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

Stock-Based Compensation - Summary of Stock Option Awards Granted (Details)	12 Months Ended
	Dec. 31, 2018 employee $ / shares shares	Dec. 31, 2017 employee $ / shares shares	Dec. 31, 2016 employee $ / shares shares
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares	535,000
Weighted Average Exercise Price (usd per share)	$ 8.91
Employee inducement
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period			3 years
Weighted Average Grant Date Fair Value (usd per share)	8.95	$ 6.33	$ 4.94
Director group
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares			20,417
Director group (4)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Weighted Average Grant Date Fair Value (usd per share)	9.45	6.35
Director Group Two
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period			3 years
Employee group
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period			2 years
Weighted Average Grant Date Fair Value (usd per share)	$ 9.56	$ 6.31	$ 4.88
Options \| Employee inducement
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares	535,000	335,000	232,500
Vesting Period			3 years
Weighted Average Exercise Price (usd per share)	$ 8.91	$ 6.19	$ 4.61
Weighted Average Grant Date Fair Value (usd per share)	$ 2.89	$ 3.41	$ 2.60
Number of employees granted non-qualified stock options \| employee	9
Options \| Director group
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares		90,566
Weighted Average Exercise Price (usd per share)		$ 6.34
Weighted Average Grant Date Fair Value (usd per share)		$ 3.49
Number of employees granted non-qualified stock options \| employee		1	1
Options \| CEO grant
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares		500,000
Vesting Period		4 years
Weighted Average Exercise Price (usd per share)		$ 7.35
Weighted Average Grant Date Fair Value (usd per share)		$ 2.36
Options \| Director group (4)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares			195,417
Weighted Average Exercise Price (usd per share)			$ 5.01
Weighted Average Grant Date Fair Value (usd per share)			$ 2.71
Options \| Employee group
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares		30,000	35,000
Vesting Period		3 years	3 years
Weighted Average Exercise Price (usd per share)		$ 7.25	$ 4.80
Weighted Average Grant Date Fair Value (usd per share)		$ 3.99	$ 2.66
Options \| Director group(2)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Number of Options Granted (shares) \| shares		35,000
Weighted Average Exercise Price (usd per share)		$ 6.25
Weighted Average Grant Date Fair Value (usd per share)		$ 3.50
Number of employees granted non-qualified stock options \| employee	1
Maximum \| Employee inducement
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period	3 years	3 years
Maximum \| Director group (4)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period	1 year	1 year
Maximum \| Employee group
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period	3 years	3 years
Maximum \| Options \| Employee inducement
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period		3 years
Maximum \| Options \| Director group
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period			1 year
Maximum \| Options \| Director group (4)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period		1 year
Maximum \| Options \| Director group(2)
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Vesting Period		3 years