9. GOODWILL

Goodwill as of December 31, 2010, 2011 and 2012 comprises the following:

	Balance December 31, 2010		Goodwill acquired		Revision of goodwill from prior acquisitions		Impairment loss			Foreign currency translation adjustment			Balance December 31, 2011

CTC Network	$	46,951	$	4,109	$	—	$	—		$	(2,210	)	$	48,850
Domashny Network		17,002		—		616		—			(908	)		16,710
Peretz Network		136,775		—		575		(71,688	)		(7,404	)		58,258
CTC Television Station Group		2,089		—		—		—			(112	)		1,977
Domashny Television Station Group		9,832		—		—		—			(523	)		9,309
CIS Group		99		—		—		—			—			99
Production Group		32,076		—		—		—			(1,713	)		30,363

Total	$	244,824	$	4,109	$	1,191	$	(71,688	)	$	(12,870	)	$	165,566

	Balance December 31, 2011		Goodwill acquired		Foreign currency translation adjustment		Balance December 31, 2012

CTC Network	$	48,850	$	1,673	$	2,933	$	53,456
Domashny Network		16,710		482		980		18,172
Peretz Network		58,258		321		3,496		62,075
CTC Television Station Group		1,977		—		118		2,095
Domashny Television Station Group		9,309		—		558		9,867
CIS Group		99		—		—		99
Production Group		30,363		—		1,823		32,186

Total	$	165,566	$	2,476	$	9,908	$	177,950

The Company has accumulated impairment losses against goodwill totaling $58,189 at each balance sheet date presented related to the CIS segment. These impairment losses were recorded in 2008 as a result of annual impairment tests. In addition, in 2011, the Company recorded a noncash impairment loss of $71,688 related to the impairment of goodwill of the Peretz Network. See Notes 2 and 10.