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Summary of Significant Accounting Policies (Details) (USD $)
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3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 1 Months Ended | 12 Months Ended | 6 Months Ended | 12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Sep. 30, 2012
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Mar. 31, 2002
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Dec. 31, 2012
item
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Dec. 31, 2011
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Dec. 31, 2010
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Sep. 30, 2012
Online
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Dec. 31, 2012
Online
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Dec. 31, 2012
Software Development Costs
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Dec. 31, 2011
Software Development Costs
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Dec. 31, 2010
Software Development Costs
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Oct. 31, 2011
Estimated remaining useful life for tangible assets
Software Development Costs
MediaMind Technologies ("Mediamind")
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Oct. 31, 2011
Estimated remaining useful life for tangible assets
Software Development Costs
Previously reported
MediaMind Technologies ("Mediamind")
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Dec. 31, 2012
Estimated remaining useful life for tangible assets
Software Development Costs
Adjustment Impact
MediaMind Technologies ("Mediamind")
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Dec. 31, 2011
Estimated remaining useful life for tangible assets
Software Development Costs
Adjustment Impact
MediaMind Technologies ("Mediamind")
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Dec. 31, 2010
Estimated remaining useful life for tangible assets
Certain developed technology
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Dec. 31, 2010
Estimated remaining useful life for tangible assets
Certain developed technology
Previously reported
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Dec. 31, 2010
Estimated remaining useful life for tangible assets
Certain developed technology
Adjustment Impact
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Dec. 31, 2011
Reduction in estimate of Match Point's 2011 and 2012 revenues
Adjustment Impact
Match Point
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Dec. 31, 2012
Reduction in estimated bonus
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| Change in estimates | ||||||||||||||||||||
| Additional depreciation expense | $ 27,609,000 | $ 18,580,000 | $ 17,404,000 | $ 8,500,000 | $ 5,600,000 | $ 7,500,000 | $ 900,000 | $ 500,000 | $ 1,300,000 | |||||||||||
| Increase (decrease) in net income (loss) | (500,000) | (300,000) | (700,000) | 400,000 | 600,000 | |||||||||||||||
| Increase (decrease) in diluted earnings (loss) per share | $ (0.02) | $ (0.01) | $ (0.03) | $ 0.02 | $ 0.02 | |||||||||||||||
| Estimated useful life | 3 years | 9 months | 25 months | 6 months | 13 months | |||||||||||||||
| Reduction in estimated earnout obligation | 900,000 | |||||||||||||||||||
| Net book value | 66,169,000 | 66,169,000 | 54,159,000 | 16,100,000 | 12,200,000 | |||||||||||||||
| Reduction in estimated bonus | 1,100,000 | |||||||||||||||||||
| Increase (decrease) in income from continuing operations | (500,000) | (300,000) | (700,000) | 400,000 | 600,000 | |||||||||||||||
| Goodwill impairment | 11,427,000 | 208,166,000 | 131,300,000 | 219,593,000 | 11,400,000 | 219,593,000 | ||||||||||||||
| Long-Term Investments | ||||||||||||||||||||
| Number of investments written down | 2 | |||||||||||||||||||
| Write-down of investments | $ 2,394,000 | |||||||||||||||||||