Summaryof subordinated debenture issuance (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Summaryof subordinated debenture issuance
North Valley Capital Trust II	$ 6,186,000	$ 6,186,000
North Valley Capital Trust III	5,155,000	5,155,000
North Valley Capital Statutory Trust IV	10,310,000	10,310,000
Total subordinated debentures issued	21,651,000	21,651,000
Company had recorded accrued and unpaid interest payments	$ 75,000	$ 77,000