XML 51 R12.htm IDEA: XBRL DOCUMENT v2.4.0.8

GOODWILL

9 Months Ended

Sep. 30, 2013

Goodwill [Abstract]

GOODWILL

GOODWILL

The changes in the carrying amount of goodwill by operating segment consist of the following (in thousands):

	United States				International				Total
Goodwill, December 31, 2011	$	67,465			$	24,319			$	91,784
Acquisitions	625,174				—				625,174
Effect of foreign currency translation	—				1,120				1,120
Goodwill, December 31, 2012	692,639				25,439				718,078
Effect of foreign currency translation	—				(39		)		(39		)
Goodwill, September 30, 2013	$	692,639			$	25,400			$	718,039

The Company recorded goodwill of approximately $625.2 million in connection with the April 30, 2012 acquisition of LoopNet.

X

- Details

Name:	csgp_GoodwillAbstract
Namespace Prefix:	csgp_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The entire disclosure for goodwill.

+ References

No definition available.

+ Details

Name:	us-gaap_GoodwillDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration