Note 3 - Loans and Allowance for Loan Losses (Details) - Allowance for Loan Losses (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Ending allowance balance attributable to loans:
Individually evaluated for impairment	$ 1,308,000		$ 1,308,000		$ 1,529,000
Collectively evaluated for impairment	3,747,000		3,747,000		3,393,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	5,055,000	4,904,000	5,055,000	4,904,000
Beginning balance	5,066,000	4,835,000	4,922,000	4,736,000
Provisions for loan losses	75,000	100,000	190,000	575,000
Charge-offs	(140,000)	(114,000)	(366,000)	(708,000)
Recoveries	54,000	83,000	309,000	301,000
Residential Mortgage Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	53,000		53,000		112,000
Collectively evaluated for impairment	772,000		772,000		699,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	825,000	894,000	825,000	894,000
Beginning balance	843,000	905,000	811,000	922,000
Provisions for loan losses	36,000	(26,000)	148,000	211,000
Charge-offs	(56,000)	0	(140,000)	(298,000)
Recoveries	2,000	15,000	6,000	59,000
Land Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	156,000		156,000		152,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	156,000	70,000	156,000	70,000
Beginning balance	153,000	73,000	152,000	71,000
Provisions for loan losses	3,000	(3,000)	4,000	1,000
Charge-offs	0	0	0	(2,000)
Recoveries	0	0	0	0
Residential Construction Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	77,000		77,000		63,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	77,000	50,000	77,000	50,000
Beginning balance	78,000	60,000	63,000	0
Provisions for loan losses	(1,000)	(10,000)	14,000	50,000
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Commercial Real Estate Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	13,000		13,000		145,000
Collectively evaluated for impairment	1,248,000		1,248,000		1,139,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	1,261,000	1,241,000	1,261,000	1,241,000
Beginning balance	1,280,000	1,291,000	1,284,000	1,310,000
Provisions for loan losses	(19,000)	(52,000)	(23,000)	3,000
Charge-offs	0	(1,000)	0	(89,000)
Recoveries	0	3,000	0	17,000
Commercial Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	1,226,000		1,226,000		1,259,000
Collectively evaluated for impairment	221,000		221,000		187,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	1,447,000	1,474,000	1,447,000	1,474,000
Beginning balance	1,444,000	1,260,000	1,446,000	1,223,000
Provisions for loan losses	(5,000)	210,000	(12,000)	196,000
Charge-offs	0	0	0	0
Recoveries	8,000	4,000	13,000	55,000
Home Equity And Second Mortgage [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	16,000		16,000		13,000
Collectively evaluated for impairment	929,000		929,000		864,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	945,000	865,000	945,000	865,000
Beginning balance	932,000	894,000	877,000	919,000
Provisions for loan losses	1,000	(13,000)	(69,000)	(37,000)
Charge-offs	0	(24,000)	(54,000)	(59,000)
Recoveries	12,000	8,000	191,000	42,000
Consumer Portfolio Segment [Member]
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	344,000		344,000		289,000
Acquired with deteriorated credit quality	0		0		0
Ending balance	344,000	310,000	344,000	310,000
Beginning balance	336,000	352,000	289,000	291,000
Provisions for loan losses	60,000	(6,000)	128,000	151,000
Charge-offs	(84,000)	(89,000)	(172,000)	(260,000)
Recoveries	$ 32,000	$ 53,000	$ 99,000	$ 128,000