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ACQUISITIONS (Schedule of Consideration Paid to Aquire LoopNet) (Details) (LoopNet [Member], USD $) In Thousands, except Share data, unless otherwise specified	0 Months Ended
	Apr. 30, 2012
LoopNet [Member]
Business Acquisition [Line Items]
Cash	$ 746,393
Equity interest, number of shares (in shares)	1,880,300
Equity interest, price per share (in dollars per share)	$ 72.89
Equity interest	137,055
Fair value of total consideration transferred	$ 883,448

X

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)(4)

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of equity interests of the acquirer, including instruments or interests issued or issuable in consideration for the business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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