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Goodwill and Other Intangible Assets (Goodwill) (Details) (USD $)
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12 Months Ended | 3 Months Ended | 3 Months Ended | 3 Months Ended | |||||
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Dec. 31, 2012
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Dec. 31, 2011
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Nov. 03, 2010
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Dec. 31, 2012
Developed Technology Rights [Member]
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Nov. 03, 2010
Developed Technology Rights [Member]
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Dec. 31, 2012
Database Rights [Member]
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Nov. 03, 2010
Database Rights [Member]
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Dec. 31, 2012
Trade Names [Member]
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Nov. 03, 2010
Trade Names [Member]
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| Goodwill [Line Items] | |||||||||
| Goodwill, Impairment Loss | $ 16,400,000 | ||||||||
| Goodwill | 2,523,000 | 18,908,000 | |||||||
| Intangible Assets, Net (Excluding Goodwill) | 8,400,000 | 4,100,000 | 2,200,000 | 2,100,000 | |||||
| Impairment of Intangible Assets, Finite-lived | $ 4,400,000 | $ 2,600,000 | $ 1,700,000 | $ 2,100,000 |
| X | ||||||||||
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- Definition
Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of a finite-lived intangible asset to fair value. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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