Note 6 - Debt and Equity Securities (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Trading Securities [Table Text Block]

	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Securities held-to-maturity:
Municipals	$	22,913	$	21,889	$	-	$	1,024
Total municipals		22,913		21,889		-		1,024
FNMA		7,973		7,810		-		163
Total mortgage-backed securities		7,973		7,810		-		163
Total	$	30,886	$	29,699	$	-	$	1,187

	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Securities held-to-maturity:
Municipals	$	37,735	$	35,408	$	-	$	2,327
Total	$	37,735	$	35,408	$	-	$	2,327

	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Corporate	$	110,000	$	102,767	$	-	$	7,233
Municipals		101,680		103,199		1,519		-
Mutual funds		11,575		11,575		-		-
Collateralized loan obligations		10,000		10,053		53		-
Other		1,110		1,110		-		-
Total other securities		234,365		228,704		1,572		7,233
REMIC and CMO		328,668		325,302		595		3,961
GNMA		1,016		1,088		72		-
FNMA		136,198		135,474		330		1,054
FHLMC		48,103		47,786		18		335
Total mortgage-backed securities		513,985		509,650		1,015		5,350
Total securities available for sale	$	748,350	$	738,354	$	2,587	$	12,583

	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Corporate	$	110,000	$	102,910	$	-	$	7,090
Municipals		124,984		126,903		1,983		64
Mutual funds		21,366		21,366		-		-
Collateralized loan obligations		85,470		86,365		895		-
Other		7,363		7,361		-		2
Total other securities		349,183		344,905		2,878		7,156
REMIC and CMO		402,636		401,370		1,607		2,873
GNMA		1,319		1,427		108		-
FNMA		109,493		108,351		463		1,605
FHLMC		5,378		5,328		35		85
Total mortgage-backed securities		518,826		516,476		2,213		4,563
Total securities available for sale	$	868,009	$	861,381	$	5,091	$	11,719

Investments Classified by Contractual Maturity Date [Table Text Block]

	Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	1,045	$	1,045
Due after ten years		21,868		20,844
Total other securities		22,913		21,889
Mortgage-backed securities		7,973		7,810
Total securities held-to-maturity	$	30,886	$	29,699

	Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	-	$	-
Due after one year through five years		4,306		4,317
Due after five years through ten years		129,931		122,809
Due after ten years		88,553		90,003
Total other securities		222,790		217,129
Mutual funds		11,575		11,575
Mortgage-backed securities		513,985		509,650
Total securities available for sale	$	748,350	$	738,354

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

			Total				Less than 12 months				12 months or more
	Count		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
Held-to-maturity securities
Municipals		1	$	20,844	$	1,024	$	20,844	$	1,024	$	-	$	-
Total other securities		1		20,844		1,024		20,844		1,024		-		-
FNMA		1		7,810		163		7,810		163		-		-
Total mortgage-backed  securities		1		7,810		163		7,810		163		-		-
Total securities held-to-maturity		2	$	28,654	$	1,187	$	28,654	$	1,187	$	-	$	-
Available for sale securities
Corporate		14	$	102,767	$	7,233	$	9,723	$	277	$	93,044	$	6,956
Total other securities		14		102,767		7,233		9,723		277		93,044		6,956
REMIC and CMO		36		249,596		3,961		162,781		1,406		86,815		2,555
FNMA		17		120,510		1,054		109,258		850		11,252		204
FHLMC		2		46,829		335		43,258		294		3,571		41
Total mortgage-backed  securities		55		416,935		5,350		315,297		2,550		101,638		2,800
Total securities available for sale		69	$	519,702	$	12,583	$	325,020	$	2,827	$	194,682	$	9,756

			Total				Less than 12 months				12 months or more
	Count		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
	(Dollars in thousands)
Held-to-maturity securities
Municipals		1	$	19,538	$	2,327	$	19,538	$	2,327	$	-	$	-
Total securities held-to-maturity		1	$	19,538	$	2,327	$	19,538	$	2,327	$	-	$	-
Available for sale securities
Corporate		14	$	102,910	$	7,090	$	28,476	$	1,524	$	74,434	$	5,566
Municipals		4		16,047		64		16,047		64		-		-
Other		1		298		2		-		-		298		2
Total other securities		19		119,255		7,156		44,523		1,588		74,732		5,568
REMIC and CMO		35		222,807		2,873		208,827		2,268		13,980		605
FNMA		18		80,924		1,605		74,972		1,250		5,952		355
FHLMC		1		3,993		85		3,993		85		-		-
Total mortgage-backed  securities		54		307,724		4,563		287,792		3,603		19,932		960
Total securities available for sale		73	$	426,979	$	11,719	$	332,315	$	5,191	$	94,664	$	6,528

Schedule of Realized Gain (Loss) [Table Text Block]

	For the years ended December 31,
	2017			2016			2015
	(In thousands)
Gross gains from the sale of securities	$	401		$	2,370		$	2,899
Gross losses from the sale of securities		(587	)		(846	)		(2,732	)
Net (losses) gains from the sale of securities	$	(186	)	$	1,524		$	167