XML 24 R37.htm IDEA: XBRL DOCUMENT v2.4.0.8

Nature of Business (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended		0 Months Ended	24 Months Ended		0 Months Ended
	Jun. 05, 2014 Vadnais Corporation	Jun. 05, 2014 Vadnais Corporation 2014 earnout target	Jun. 05, 2014 Vadnais Corporation 2014 earnout target Minimum	Dec. 31, 2013 PES item	Jan. 02, 2014 Blythe	Jan. 22, 2014 BWP Blaus Wasser, LLC
Nature of Business
Number of subsidiaries that were merged into PES				2
Ownership percentage					50.00%
Amount of purchase of assets and liabilities.	$ 6,400					$ 5,000
Potential contingent consideration		900
Pretax income threshold for measuring financial performance			$ 2,800

X

- Definition

Represents the amount of pretax income to be achieved by the acquiree in earnout target period to measure cash payment of potential contingent consideration.

+ References

No definition available.

+ Details

Name:	prim_BusinessCombinationContingentConsiderationPretaxIncomeForMeasuringPotentialCashPayment
Namespace Prefix:	prim_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	prim_NatureOfBusinessLineItems
Namespace Prefix:	prim_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of ownership interest of the entity.

+ References

No definition available.

+ Details

Name:	prim_PercentageOfOwnershipInterest
Namespace Prefix:	prim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)(3)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

+ Details

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

X

- Definition

The number of businesses acquired by the entity during the period.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration