Note 2 - Investments (Tables)

3 Months Ended

Mar. 31, 2013

Investment [Table Text Block]

(In thousands of dollars)	Amortized Cost		Unrealized Gains		Unrealized Losses			Carrying Value
March 31, 2013
Securities available for sale
U.S. governmental agency	$	99,000	$	1,082	$	(6	)	$	100,076
States and political subdivisions		148,135		1,684		(211	)		149,608
Mortgage backed securities		58,917		1,789		0			60,706
Collateralized mortgage obligations		47,919		807		(31	)		48,695
Equity and other securities		1,632		219		0			1,851
Total securities available for sale	$	355,603	$	5,581	$	(248	)	$	360,936
December 31, 2012
Securities available for sale
U.S. governmental agency	$	105,629	$	1,271	$	(15	)	$	106,885
States and political subdivisions		116,123		1,786		(95	)		117,814
Mortgage backed securities		64,550		1,729		(2	)		66,277
Collateralized mortgage obligations		60,278		810		(58	)		61,030
Equity and other securities		1,610		62		0			1,672
Total securities available for sale	$	348,190	$	5,658	$	(170	)	$	353,678

Schedule of Unrealized Loss on Investments [Table Text Block]

(In thousands of dollars)	Less than 12 Months					12 Months or More					Total
Description of Securities	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
March 31, 2013
U.S. governmental agency	$	5,463	$	(6	)	$	0	$	0		$	5,463	$	(6	)
States and political subdivisions		39,624		(210	)		579		(1	)		40,203		(211	)
Mortgage backed securities		0		0			0		0			0		0
Collateralized mortgage obligations		4,926		(24	)		674		(7	)		5,600		(31	)
Total temporarily impaired	$	50,013	$	(240	)	$	1,253	$	(8	)	$	51,266	$	(248	)
December 31, 2012
U.S. governmental agencies	$	10,135	$	(15	)	$	0	$	0		$	10,135	$	(15	)
States and political subdivisions		17,141		(93	)		582		(2	)		17,723		(95	)
Mortgage backed securities		0		0			513		(2	)		513		(2	)
Collateralized mortgage obligations		19,995		(55	)		721		(3	)		20,716		(58	)
Total temporarily impaired	$	47,271	$	(163	)	$	1,816	$	(7	)	$	49,087	$	(170	)

Realized Gain (Loss) on Investments [Table Text Block]

	As of March 31,
(In thousands of dollars)	2013		2012
Trading Account Securities Gains/Losses	$	0	$	1
Available for Sale Securities
Gross realized gains		67		13
Gross realized losses		17		0
Net realized gains	$	50	$	13

Investments Classified by Contractual Maturity Date [Table Text Block]

(In thousands of dollars)	Carrying Value
Due in one year or less	$	48,052
Due after one year through five years		160,918
Due after five years through ten years		83,993
Due after ten years		66,122
Total debt securities		359,085
Equity securities		1,851
Total securities	$	360,936