Note 5 - Loans (Details) - Loans Secured by Commercial Real Estate by Category (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013
Secured by:
Loans, gross (in Dollars)	$ 776,947	$ 767,513	$ 756,814
Percentage of loans, gross	100.00%	100.00%
Development Commercial Real Estate Loans [Member] | Land Unimproved [Member]
Secured by:
Loans, gross (in Dollars)	14,535
Percentage of loans, gross	1.90%
Percentage of Bank's total regulatory capital	10.40%
Development Commercial Real Estate Loans [Member] | Land Development Commercial [Member]
Secured by:
Loans, gross (in Dollars)	6,002
Percentage of loans, gross	0.80%
Percentage of Bank's total regulatory capital	4.30%
Development Commercial Real Estate Loans [Member] | Land Development Residential [Member]
Secured by:
Loans, gross (in Dollars)	7,815
Percentage of loans, gross	1.00%
Percentage of Bank's total regulatory capital	5.60%
Development Commercial Real Estate Loans [Member] | Commercial Construction Retail [Member]
Secured by:
Loans, gross (in Dollars)	3,976
Percentage of loans, gross	0.50%
Percentage of Bank's total regulatory capital	2.80%
Development Commercial Real Estate Loans [Member] | Multi Family [Member]
Secured by:
Loans, gross (in Dollars)	130
Percentage of Bank's total regulatory capital	0.10%
Development Commercial Real Estate Loans [Member]
Secured by:
Loans, gross (in Dollars)	32,458
Percentage of loans, gross	4.20%
Percentage of Bank's total regulatory capital	23.20%
Existing And Other Commercial Real Estate Loans [Member] | Commercial Construction Retail [Member]
Secured by:
Loans, gross (in Dollars)	28,660
Percentage of loans, gross	3.70%
Percentage of Bank's total regulatory capital	20.50%
Existing And Other Commercial Real Estate Loans [Member] | Multi Family [Member]
Secured by:
Loans, gross (in Dollars)	17,970
Percentage of loans, gross	2.30%
Percentage of Bank's total regulatory capital	12.80%
Existing And Other Commercial Real Estate Loans [Member] | Hotel/Motel [Member]
Secured by:
Loans, gross (in Dollars)	52,413
Percentage of loans, gross	6.70%
Percentage of Bank's total regulatory capital	37.40%
Existing And Other Commercial Real Estate Loans [Member] | Office Loan [Member]
Secured by:
Loans, gross (in Dollars)	23,589
Percentage of loans, gross	3.00%
Percentage of Bank's total regulatory capital	16.80%
Existing And Other Commercial Real Estate Loans [Member] | Industrial And Warehouse [Member]
Secured by:
Loans, gross (in Dollars)	6,076
Percentage of loans, gross	0.80%
Percentage of Bank's total regulatory capital	4.30%
Existing And Other Commercial Real Estate Loans [Member] | Health Care [Member]
Secured by:
Loans, gross (in Dollars)	13,372
Percentage of loans, gross	1.70%
Percentage of Bank's total regulatory capital	9.50%
Existing And Other Commercial Real Estate Loans [Member] | Miscellaneous Commercial [Member]
Secured by:
Loans, gross (in Dollars)	103,928
Percentage of loans, gross	13.40%
Percentage of Bank's total regulatory capital	74.20%
Existing And Other Commercial Real Estate Loans [Member] | Residential Construction Speculative [Member]
Secured by:
Loans, gross (in Dollars)	65
Percentage of Bank's total regulatory capital	0.10%
Existing And Other Commercial Real Estate Loans [Member]
Secured by:
Loans, gross (in Dollars)	246,073
Percentage of loans, gross	31.60%
Percentage of Bank's total regulatory capital	175.60%
Commercial Real Estate Loans [Member] | Commercial Owner Occupied [Member]
Secured by:
Loans, gross (in Dollars)	151,494
Percentage of loans, gross	19.50%
Percentage of Bank's total regulatory capital	108.10%
Commercial Real Estate Loans [Member] | Commercial Construction Owner Occupied [Member]
Secured by:
Loans, gross (in Dollars)	6,866
Percentage of loans, gross	0.90%
Percentage of Bank's total regulatory capital	4.90%
Commercial Real Estate Loans [Member] | Residential Construction Contract [Member]
Secured by:
Loans, gross (in Dollars)	9,357
Percentage of loans, gross	1.20%
Percentage of Bank's total regulatory capital	6.60%
Commercial Real Estate Loans [Member]
Secured by:
Loans, gross (in Dollars)	167,717
Percentage of loans, gross	21.60%
Percentage of Bank's total regulatory capital	119.60%
Commercial Real Estate Portfolio Segment [Member]
Secured by:
Loans, gross (in Dollars)	$ 446,248	$ 455,452
Percentage of loans, gross	57.40%
Percentage of Bank's total regulatory capital	318.40%