Note 4 - Loans and Allowance for Loan Losses (Details) - Activity in the Allowance for Loan Losses, by Portfolio Segment, for the Current Year: (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	$ 26,983	$ 27,735	$ 27,442	$ 27,882	$ 27,530
Provision for loan losses	1,602	1,034	2,510	1,953
Charge-offs	(2,481)	(2,073)	(4,562)	(3,691)
Recoveries	1,426	702	2,140	1,254
Net charge-offs	(1,055)	(1,371)	(2,422)	(2,437)
Balance	27,530	27,398	27,530	27,398		27,442
Period-end amount allocated to:
Loans individually evaluated for impairment	2,012	1,895	2,012	1,895		1,960
Loans collectively evaluated for impairment	25,518	25,503	25,518	25,503		25,482
Commercial and Residential Real Estate Collateral [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	3,508	3,532	3,205	3,446
Provision for loan losses	613	233	984	362
Charge-offs	(186)	(133)	(268)	(229)
Recoveries	16	87	30	140
Net charge-offs	(170)	(46)	(238)	(89)
Balance	3,951	3,719	3,951	3,719		3,205
Period-end amount allocated to:
Loans individually evaluated for impairment	136	114	136	114		93
Loans collectively evaluated for impairment	3,815	3,605	3,815	3,605		3,112
Real Estate Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	16,393	16,131	16,885	15,453
Provision for loan losses	(142)	(64)	93	785
Charge-offs	(1,144)	(887)	(2,179)	(1,126)
Recoveries	1,062	295	1,370	363
Net charge-offs	(82)	(592)	(809)	(763)
Balance	16,169	15,475	16,169	15,475		16,885
Period-end amount allocated to:
Loans individually evaluated for impairment	1,697	1,509	1,697	1,509		1,680
Loans collectively evaluated for impairment	14,472	13,966	14,472	13,966		15,205
Credit Cards [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	5,444	6,799	5,430	7,211
Provision for loan losses	576	616	1,135	877
Charge-offs	(725)	(743)	(1,541)	(1,652)
Recoveries	215	204	486	440
Net charge-offs	(510)	(539)	(1,055)	(1,212)
Balance	5,510	6,876	5,510	6,876		5,430
Period-end amount allocated to:
Loans individually evaluated for impairment	13	76	13	76		16
Loans collectively evaluated for impairment	5,497	6,800	5,497	6,800		5,414
Other Consumer and Other Loans [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Balance	1,638	1,273	1,922	1,772
Provision for loan losses	555	249	298	(71)
Charge-offs	(426)	(310)	(574)	(684)
Recoveries	133	116	254	311
Net charge-offs	(293)	(194)	(320)	(373)
Balance	1,900	1,328	1,900	1,328		1,922
Period-end amount allocated to:
Loans individually evaluated for impairment	166	196	166	196		171
Loans collectively evaluated for impairment	$ 1,734	$ 1,132	$ 1,734	$ 1,132		$ 1,751