Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale [Line Items]
Due in one year or less, amortized cost	$ 3,299
Due in one year or less, fair value	3,347
Due after one year through five years, amortized cost	62,654
Due after one year through five years, fair value	62,829
Due after five years through ten years, amortized cost	121,126
Due after five years through ten years, fair value	119,472
Due after ten years, amortized cost	24,204
Due after ten years, fair value	23,969
Available for sale securities, amortized cost	211,283
Available for sale securities, fair value	209,617	214,383
US Government Agencies Debt Securities [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale [Line Items]
Due in one year or less, amortized cost	0
Due in one year or less, fair value	0
Due after one year through five years, amortized cost	0
Due after one year through five years, fair value	0
Due after five years through ten years, amortized cost	1,932
Due after five years through ten years, fair value	1,946
Due after ten years, amortized cost	0
Due after ten years, fair value	0
Available for sale securities, amortized cost	1,932
Available for sale securities, fair value	1,946
State and Municipal [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale [Line Items]
Due in one year or less, amortized cost	2,388
Due in one year or less, fair value	2,434
Due after one year through five years, amortized cost	1,799
Due after one year through five years, fair value	1,862
Due after five years through ten years, amortized cost	1,076
Due after five years through ten years, fair value	1,050
Due after ten years, amortized cost	0
Due after ten years, fair value	0
Available for sale securities, amortized cost	5,263
Available for sale securities, fair value	5,346	7,460
Collateralized Mortgage Obligations (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale [Line Items]
Due in one year or less, amortized cost	911
Due in one year or less, fair value	913
Due after one year through five years, amortized cost	10,137
Due after one year through five years, fair value	9,989
Due after five years through ten years, amortized cost	81,240
Due after five years through ten years, fair value	79,712
Due after ten years, amortized cost	0
Due after ten years, fair value	0
Available for sale securities, amortized cost	92,288
Available for sale securities, fair value	90,614	93,132
Other Mortgage-Backed (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale [Line Items]
Due after one year through five years, amortized cost	37,856
Due after one year through five years, fair value	38,155
Due after five years through ten years, amortized cost	21,828
Due after five years through ten years, fair value	21,596
Due after ten years, amortized cost	17,798
Due after ten years, fair value	17,581
Available for sale securities, amortized cost	77,482
Available for sale securities, fair value	77,332	76,020
SBA Loan-Backed (Federal Agencies) [Member]
Note 4 - Investment Securities Available-for-sale (Details) - Amortized Cost and Estimated Fair Value of Investment Securities Available for Sale [Line Items]
Due in one year or less, amortized cost	0
Due in one year or less, fair value	0
Due after one year through five years, amortized cost	12,862
Due after one year through five years, fair value	12,823
Due after five years through ten years, amortized cost	15,050
Due after five years through ten years, fair value	15,168
Due after ten years, amortized cost	6,406
Due after ten years, fair value	6,388
Available for sale securities, amortized cost	34,318
Available for sale securities, fair value	$ 34,379	$ 37,771