NOTE 6 - SUBORDINATED DEBENTURES (Details) - (Table 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
North Valley Capital Trust's	$ 21,651	$ 21,651
Debentures A [Member]
North Valley Capital Trust's	4/10/03	4/10/03
North Valley Capital Trust's	Apr. 24, 2033	Apr. 24, 2033
North Valley Capital Trust's	Variable	Variable
North Valley Capital Trust's	3.55%	3.55%
North Valley Capital Trust's	LIBOR + 3.25%	LIBOR + 3.25%
North Valley Capital Trust's	4/24/08	4/24/08
North Valley Capital Trust's	6,186	6,186
Debentures B [Member]
North Valley Capital Trust's	5/5/04	5/5/04
North Valley Capital Trust's	Apr. 24, 2034	Apr. 24, 2034
North Valley Capital Trust's	Variable	Variable
North Valley Capital Trust's	3.10%	3.10%
North Valley Capital Trust's	LIBOR + 2.80%	LIBOR + 2.80%
North Valley Capital Trust's	7/23/09	7/23/09
North Valley Capital Trust's	5,155	5,155
Debentures C [Member]
North Valley Capital Trust's	12/29/05	12/29/05
North Valley Capital Trust's	Mar. 15, 2036	Mar. 15, 2036
North Valley Capital Trust's	Variable	Variable
North Valley Capital Trust's	1.61%	1.61%
North Valley Capital Trust's	LIBOR + 1.33%	LIBOR + 1.33%
North Valley Capital Trust's	3/15/11	3/15/11
North Valley Capital Trust's	$ 10,310	$ 10,310