Note 2 - Securities (Tables)

6 Months Ended

Jun. 30, 2013

Investments, Debt and Equity Securities [Abstract]

Available-for-sale Securities [Table Text Block]

	June 30, 2013
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government agencies and corporations	$	23,069	$	2	$	(1,312	)	$	21,759
Mortgage-backed securities		3,222		33		(100	)		3,155
Obligations of states and political subdivisions		117,905		5,058		(547	)		122,416
Preferred stock		27		231		—			258
	$	144,223	$	5,324	$	(1,959	)	$	147,588

	December 31, 2012
(Dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
U.S. government agencies and corporations	$	24,628	$	24	$	(3	)	$	24,649
Mortgage-backed securities		2,127		62		—			2,189
Obligations of states and political subdivisions		116,879		9,069		(73	)		125,875
Preferred stock		27		77		—			104
	$	143,661	$	9,232	$	(76	)	$	152,817

Investments Classified by Contractual Maturity Date [Table Text Block]

	June 30, 2013
(Dollars in thousands)	Amortized Cost		Estimated Fair Value
Due in one year or less	$	28,829	$	28,338
Due after one year through five years		39,349		40,738
Due after five years through ten years		49,852		50,997
Due after ten years		26,166		27,257
Preferred stock		27		258
	$	144,223	$	147,588

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
U.S. government agencies and corporations	$	20,628	$	1,312	$	—	$	—	$	20,628	$	1,312
Mortgage backed securities		2,080		100		—		—		2,080		100
Obligations of states and political subdivisions		13,051		511		816		36		13,867		547
Total temporarily impaired securities	$	35,759	$	1,923	$	816	$	36	$	36,575	$	1,959

	Less Than 12 Months				12 Months or More				Total
(Dollars in thousands)	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
U.S. government agencies and corporations	$	5,479	$	3	$	—	$	—	$	5,479	$	3
Obligations of states and political subdivisions		5,804		71		263		2		6,067		73
Total temporarily impaired securities	$	11,283	$	74	$	263	$	2	$	11,546	$	76