NOTE 7- SUBORDINATED DEBENTURES - (Table 1) (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
North Valley Capital Trust's - Amount	$ 21,651	$ 21,651
Debentures A
North Valley Capital Trust's - Date Issued	4/10/03	4/10/03
North Valley Capital Trust's - Maturity	Apr. 24, 2033	Apr. 24, 2033
North Valley Capital Trust's - Fixed or Variable Rate	Variable	Variable
North Valley Capital Trust's - Current Variable Rate	3.52%	3.52%
North Valley Capital Trust's - Rate Index	LIBOR + 3.25	LIBOR + 3.25
North Valley Capital Trust's - Redemption Date	4/24/08	4/24/08
North Valley Capital Trust's - Amount	6,186
Debentures B
North Valley Capital Trust's - Date Issued	5/5/04	5/5/04
North Valley Capital Trust's - Maturity	Apr. 24, 2034	Apr. 24, 2034
North Valley Capital Trust's - Fixed or Variable Rate	Variable	Variable
North Valley Capital Trust's - Current Variable Rate	3.08%	3.08%
North Valley Capital Trust's - Rate Index	LIBOR + 2.80	LIBOR + 2.80
North Valley Capital Trust's - Redemption Date	7/23/09	7/23/09
North Valley Capital Trust's - Amount	5,155
Debentures C
North Valley Capital Trust's - Date Issued	12/29/05	12/29/05
North Valley Capital Trust's - Maturity	Mar. 15, 2036	Mar. 15, 2036
North Valley Capital Trust's - Fixed or Variable Rate	Variable	Variable
North Valley Capital Trust's - Current Variable Rate	1.60%	1.60%
North Valley Capital Trust's - Rate Index	LIBOR + 1.33	LIBOR + 1.33
North Valley Capital Trust's - Redemption Date	3/15/11	3/15/11
North Valley Capital Trust's - Amount	$ 10,310