Note 4 - Securities (Details) - Unrealized Gains and Losses in Investments (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Securities Available for Sale:
Amortized Cost	$ 343,212	$ 348,190
Unrealized Gains	2,523	5,658
Unrealized Losses	(2,133)	(170)
Carrying Value	343,602	353,678
US Government Agencies Debt Securities [Member]
Securities Available for Sale:
Amortized Cost	101,444	105,629
Unrealized Gains	445	1,271
Unrealized Losses	(285)	(15)
Carrying Value	101,604	106,885
US States and Political Subdivisions Debt Securities [Member]
Securities Available for Sale:
Amortized Cost	147,421	116,123
Unrealized Gains	756	1,786
Unrealized Losses	(1,513)	(95)
Carrying Value	146,664	117,814
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Securities Available for Sale:
Amortized Cost	58,533	64,550
Unrealized Gains	961	1,729
Unrealized Losses	(235)	(2)
Carrying Value	59,259	66,277
Collateralized Mortgage Obligations [Member]
Securities Available for Sale:
Amortized Cost	34,225	60,278
Unrealized Gains	361	810
Unrealized Losses	(100)	(58)
Carrying Value	34,486	61,030
Equity Securities, Other [Member]
Securities Available for Sale:
Amortized Cost	1,589	1,610
Unrealized Gains	0	62
Unrealized Losses	0	0
Carrying Value	$ 1,589	$ 1,672