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Detail of Certain Balance Sheet Accounts (Property and Equipment) (Details) (USD $) | 6 Months Ended |  | 6 Months Ended |  |  |  | 3 Months Ended |  |  | 3 Months Ended |  |  | 3 Months Ended |  |  | 3 Months Ended |  |  | 3 Months Ended |  |  | 6 Months Ended
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Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Land [Member] | Dec. 31, 2013 Land [Member] | Jun. 30, 2014 Buildings [Member] | Dec. 31, 2013 Buildings [Member] | Jun. 30, 2014 Buildings [Member] Minimum [Member] | Jun. 30, 2014 Buildings [Member] Maximum [Member] | Jun. 30, 2014 Leasehold improvements [Member] | Dec. 31, 2013 Leasehold improvements [Member] | Jun. 30, 2014 Leasehold improvements [Member] Minimum [Member] | Jun. 30, 2014 Machinery and equipment [Member] | Dec. 31, 2013 Machinery and equipment [Member] | Jun. 30, 2014 Machinery and equipment [Member] Minimum [Member] | Jun. 30, 2014 Machinery and equipment [Member] Maximum [Member] | Jun. 30, 2014 Furniture and fixtures [Member] | Dec. 31, 2013 Furniture and fixtures [Member] | Jun. 30, 2014 Furniture and fixtures [Member] Minimum [Member] | Jun. 30, 2014 Furniture and fixtures [Member] Maximum [Member] | Jun. 30, 2014 Company vehicles [Member] | Dec. 31, 2013 Company vehicles [Member] | Jun. 30, 2014 Company vehicles [Member] Minimum [Member] | Jun. 30, 2014 Company vehicles [Member] Maximum [Member] | Jun. 30, 2014 Construction in progress [Member] | Dec. 31, 2013 Construction in progress [Member] | Jun. 30, 2014 Land and Building [Member]
Property and Equipment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, Plant and Equipment, Estimated Useful Lives |  |  |  |  |  |  | P30Y | P40Y |  |  | varies |  |  | P7Y | P20Y |  |  | P3Y | P10Y |  |  | P3Y | P5Y |  |  |
Total | $ 1,028,150,000 | $ 974,086,000 | $ 290,303,000 | $ 269,778,000 | $ 416,185,000 | $ 405,918,000 |  |  | $ 131,199,000 | $ 120,531,000 |  | $ 83,288,000 | $ 79,209,000 |  |  | $ 75,601,000 | $ 70,918,000 |  |  | $ 8,701,000 | $ 8,508,000 |  |  | $ 22,873,000 | $ 19,224,000 |
Less accumulated depreciation and amortization | 190,329,000 | 177,730,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property and equipment, net | 837,821,000 | 796,356,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Capital expenditures incurred for purchase and construction of assets | 38,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of fixed assets |  |  | 21,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 29,800,000
Assets Held-for-sale, Long Lived | $ 32,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -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 02 -Paragraph 14 -Article 5 + Details
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- Definition Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2155824 + Details
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- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -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 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
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