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v2.4.1.9

Revenue from External Customers and Asset, by Geographical Areas (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
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Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Jun. 30, 2014 | Sep. 30, 2014 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |
Assets |  |  |  |  |  | $ 3,271,197 us-gaap_Assets | $ 3,018,175 us-gaap_Assets | $ 2,859,085 us-gaap_Assets
Revenues | 764,363 us-gaap_Revenues | 768,426 us-gaap_Revenues | 828,473 us-gaap_Revenues | 1,596,899 us-gaap_Revenues | 2,361,262 us-gaap_Revenues | 3,157,796 us-gaap_Revenues | 3,094,018 us-gaap_Revenues | 3,075,671 us-gaap_Revenues
United States [Member] |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |
Assets |  |  |  |  |  | 3,204,283 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_US | 2,940,980 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_US | 2,794,883 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_US
Revenues |  |  |  |  |  | 3,075,387 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US | 3,035,558 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US | 3,035,556 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_US
Mexico [Member] |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |
Assets |  |  |  |  |  | 59,841 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_MX | 69,826 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_MX | 46,038 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_MX
Revenues |  |  |  |  |  | 72,202 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_MX | 47,171 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_MX | 22,502 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_MX
Canada [Member] |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |
Assets |  |  |  |  |  | 7,073 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_CA | 7,369 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_CA | 18,164 us-gaap_Assets / us-gaap_StatementGeographicalAxis = country_CA
Revenues |  |  |  |  |  | $ 10,207 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_CA | $ 11,289 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_CA | $ 17,613 us-gaap_Revenues / us-gaap_StatementGeographicalAxis = country_CA

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- 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 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 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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