Note 18 - Parent Company Financial Information (Details) - Condensed Statement of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Condensed Cash Flow Statements, Captions [Line Items]
Net income	$ 8,392,000	$ 9,175,000
Adjustments to reconcile net income to net cash provided by operating activities:
Net securities gains	(824,000)	(577,000)
Stock-based compensation expense	71,000	76,000
Decrease (increase) in other assets	4,140,000	(3,370,000)
Deferred income tax provision	(212,000)	409,000
Net cash provided by operating activities	17,323,000	8,227,000
Purchase of investment securities	130,213,000	235,452,000
Proceeds from sale of investment securities	19,559,000	44,600,000
Net cash used by investing activities	(29,172,000)	(45,450,000)
Cash dividend paid	(3,130,000)	(2,997,000)
Proceeds from issuance of common stock	535,000	718,000
Tax benefit from exercise of stock options	2,000	19,000
Net cash used by financing activities	12,682,000	42,121,000
(Decrease) increase in cash and cash equivalents	833,000	4,898,000
Cash and cash equivalents at beginning of year	15,453,000	10,555,000
Cash and cash equivalents at end of year	16,286,000	15,453,000
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net income	8,392,000	9,175,000
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed income from subsidiary	(4,588,000)	(6,498,000)
Net securities gains	(629,000)	(451,000)
Stock-based compensation expense	71,000	76,000
Decrease (increase) in other assets	443,000	(84,000)
Deferred income tax provision		153,000
Net cash provided by operating activities	3,689,000	2,371,000
Purchase of investment securities	(3,763,000)	(2,132,000)
Proceeds from sale of investment securities	2,589,000	2,092,000
Net cash used by investing activities	(1,174,000)	(40,000)
Cash dividend paid	(3,130,000)	(2,997,000)
Proceeds from issuance of common stock	535,000	718,000
Tax benefit from exercise of stock options	2,000	19,000
Net cash used by financing activities	(2,593,000)	(2,260,000)
(Decrease) increase in cash and cash equivalents	(78,000)	71,000
Cash and cash equivalents at beginning of year	102,000	31,000
Cash and cash equivalents at end of year	$ 24,000	$ 102,000