XML 25 R73.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Reportable Operating Segments (Details 2) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Revenues and total assets by geographic area |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 480,883 | $ 431,842 | $ 337,436 | $ 291,573 | $ 373,066 | $ 375,483 | $ 351,956 | $ 359,645 | $ 1,541,734 | $ 1,460,150 | $ 941,765
% of revenue |  |  |  |  |  |  |  |  | 100.00% | 100.00% | 100.00%
Total Assets | 931,207 |  |  |  | 728,413 |  |  |  | 931,207 | 728,413 |
United States |  |  |  |  |  |  |  |  |  |  |
Revenues and total assets by geographic area |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,530,819 | 1,447,863 | 920,051
% of revenue |  |  |  |  |  |  |  |  | 99.30% | 99.20% | 97.70%
Total Assets | 920,872 |  |  |  | 719,028 |  |  |  | 920,872 | 719,028 |
Non-United States |  |  |  |  |  |  |  |  |  |  |
Revenues and total assets by geographic area |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 10,915 | 12,287 | 21,714
% of revenue |  |  |  |  |  |  |  |  | 0.70% | 0.80% | 2.30%
Total Assets | $ 10,335 |  |  |  | $ 9,385 |  |  |  | $ 10,335 | $ 9,385 |

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 Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RevenuesFromExternalCustomersAndLongLivedAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueServicesNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration