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4. Intangible Assets, Goodwill and Other Intangible Assets (Details) (USD $) | 3 Months Ended |  | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended |
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Mar. 31, 2012 | Mar. 31, 2011 | Dec. 31, 2011 | Mar. 31, 2012 Customer Relationships [Member] | Dec. 31, 2011 Customer Relationships [Member] | Mar. 31, 2012 Know how [Member] | Dec. 31, 2011 Know how [Member] | Mar. 31, 2012 Developed Technology Rights [Member] | Dec. 31, 2011 Developed Technology Rights [Member] | Mar. 31, 2012 Licensing Agreements [Member] | Dec. 31, 2011 Licensing Agreements [Member] | Mar. 31, 2012 Trade Names [Member] | Dec. 31, 2011 Trade Names [Member] | Mar. 31, 2012 Noncompete Agreements [Member] | Dec. 31, 2011 Noncompete Agreements [Member] | Mar. 31, 2012 Patents [Member] | Dec. 31, 2011 Patents [Member] | Mar. 31, 2012 Other Intangible Assets [Member] | Dec. 31, 2011 Other Intangible Assets [Member] | Jan. 18, 2012 Portland [Member]
Acquired Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Goodwill Amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,100,000
Finite-Lived Intangible Assets, Net [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Average Remaining Life (years) |  |  |  | 1-12 | 1-12 | 1-14 | 1-14 | 1-10 | 1-11 | 1-8 | 1-9 | 1-10 | 1-10 | 1-7 | 1-7 | 0 | 0 | 0 | 0 |
Purchase Price | 418,900,000 |  | 405,300,000 | 101,700,000 | 98,700,000 | 190,600,000 | 187,000,000 | 53,700,000 | 47,600,000 | 35,600,000 | 35,600,000 | 30,300,000 | 29,500,000 | 5,900,000 | 5,800,000 | 1,000,000 | 1,000,000 | 100,000 | 100,000 |
Accumulated Amortization | (160,600,000) |  | (145,800,000) | (33,800,000) | (30,900,000) | (52,500,000) | (45,700,000) | (26,500,000) | (24,600,000) | (16,500,000) | (15,700,000) | (24,400,000) | (22,100,000) | (5,800,000) | (5,700,000) | (1,000,000) | (1,000,000) | (100,000) | (100,000) |
Net Carrying Amount | 258,312,000 |  | 259,497,000 | 67,900,000 | 67,800,000 | 138,100,000 | 141,300,000 | 27,200,000 | 23,000,000 | 19,100,000 | 19,900,000 | 5,900,000 | 7,400,000 | 100,000 | 100,000 | 0 | 0 | 0 | 0 |
Finite-Lived Intangible Assets [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense | 10,800,000 | 8,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,100,000

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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -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. + Details
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- Definition Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -Subparagraph c -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 53 -Subparagraph d -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. + Details
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- Definition The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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- Definition Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275 + Details
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