XML 20 R57.htm IDEA: XBRL DOCUMENT v3.3.0.814

Reportable Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Segment reporting information
Revenue	$ 555,945	$ 613,237	$ 1,432,270	$ 1,598,602
% of Revenue	100.00%	100.00%	100.00%	100.00%
Gross Profit	$ 71,647	$ 75,473	$ 156,148	$ 186,424
% of Segment Revenue	12.90%	12.30%	10.90%	11.70%
Goodwill	$ 124,562		$ 124,562		$ 119,410
West
Segment reporting information
Revenue	$ 258,414	$ 289,405	$ 684,798	$ 747,823
% of Revenue	46.50%	47.20%	47.80%	46.80%
Gross Profit	$ 39,810	$ 46,240	$ 91,718	$ 115,723
% of Segment Revenue	15.40%	16.00%	13.40%	15.50%
Goodwill	$ 45,239		$ 45,239		45,239
East
Segment reporting information
Revenue	$ 183,635	$ 135,450	$ 462,222	$ 360,975
% of Revenue	33.00%	22.10%	32.30%	22.60%
Gross Profit	$ 15,400	$ 9,110	$ 33,623	$ 24,595
% of Segment Revenue	8.40%	6.70%	7.30%	6.80%
Goodwill	$ 43,267		$ 43,267		43,267
Energy
Segment reporting information
Revenue	$ 113,896	$ 188,382	$ 285,250	$ 489,804
% of Revenue	20.50%	30.70%	19.90%	30.60%
Gross Profit	$ 16,437	$ 20,123	$ 30,807	$ 46,106
% of Segment Revenue	14.40%	10.70%	10.80%	9.40%
Goodwill	$ 36,056		$ 36,056		$ 30,904

X

- Definition

Represents the gross profit represented as a percentage of total segment revenue.

+ References

No definition available.

+ Details

Name:	prim_GrossProfitAsPercentageOfSegmentRevenue
Namespace Prefix:	prim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The percentage of revenue to total revenue.

+ References

No definition available.

+ Details

Name:	prim_RevenuePercentage
Namespace Prefix:	prim_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 50



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267



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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 350



-SubTopic 20



-Section 45



-Paragraph 1



-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

+ Details

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

X

- Definition

Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.1,2)



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

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

X

- Definition

Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 225



-SubTopic 10



-Section S99



-Paragraph 2



-Subparagraph (SX 210.5-03.1(d))



-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

+ Details

Name:	us-gaap_SalesRevenueServicesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=prim_WestConstructionServicesSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=prim_EastConstructionServicesSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=prim_EnergySegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: