Camco Financial Corporation Condensed Financial Information (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income
Interest expense	$ 1,705	$ 1,780	$ 2,023	$ 2,224	$ 2,318	$ 2,420	$ 2,644	$ 2,992	$ 7,732	$ 10,374	$ 14,434
General, administrative and other expense	6,944	6,948	7,035	6,714	7,501	7,255	7,141	7,427	27,641	29,324	29,332
Federal income tax expense (credits)	20	(53)	(62)	37	2	5	(11)	548	(58)	544	518
NET EARNINGS (LOSS)	2,784	484	482	413	862	163	(1,463)	652	4,163	214	(14,559)
Parent Company [Member]
Income
Interest and other income									72	87	57
Equity in undistributed earnings (loss) of Advantage									5,082	1,346	(12,963)
Excess distribution from Camco Title									0	26	237
Total earnings (loss)									5,154	1,459	(12,669)
Interest expense									423	343	343
General, administrative and other expense									586	897	907
Earnings (loss) before federal income tax credits									4,145	219	(13,919)
Federal income tax expense (credits)									(18)	5	640
NET EARNINGS (LOSS)									$ 4,163	$ 214	$ (14,559)