Note 4 - Debt and Equity Securities (Tables)

3 Months Ended

Mar. 31, 2017

Notes Tables

Trading Securities [Table Text Block]

	At March 31, 2017
	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Securites held-to-maturity:
Municipals	$	36,406	$	34,152	$	-	$	2,254
Total	$	36,406	$	34,152	$	-	$	2,254

	At December 31, 2016
	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Securites held-to-maturity:
Municipals	$	37,735	$	35,408	$	-	$	2,327
Total	$	37,735	$	35,408	$	-	$	2,327

	At March 31, 2017
	Amortized Cost		Fair Value		Gross Unrealized Gains		Gross Unrealized Losses
	(In thousands)
Corporate	$	110,000	$	103,694	$	-	$	6,306
Municipals		124,296		127,281		2,985		-
Mutual funds		21,431		21,431		-		-
Collateralized loan obligations		85,470		86,438		968		-
Other		7,396		7,394		-		2
Total other securities		348,593		346,238		3,953		6,308
REMIC and CMO		426,537		425,209		1,826		3,154
GNMA		1,250		1,352		102		-
FNMA		107,176		106,140		396		1,432
FHLMC		5,256		5,204		31		83
Total mortgage-backed securities		540,219		537,905		2,355		4,669
Total securities available for sale	$	888,812	$	884,143	$	6,308	$	10,977

	At December 31, 2016
	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]

Held-to-maturity	Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	14,540	$	14,540
Due after ten years		21,866		19,612
Total securities held-to-maturity	$	36,406	$	34,152

Available for sale	Amortized Cost		Fair Value
	(In thousands)
Due in one year or less	$	-	$	-
Due after one year through five years		1,766		1,774
Due after five years through ten years		121,217		119,423
Due after ten years		204,179		203,610
Total other securities		327,162		324,807
Mutual funds		21,431		21,431
Mortgage-backed securities		540,219		537,905
Total securities available for sale	$	888,812	$	884,143

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

	At March 31, 2017
			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	$	19,612	$	2,254	$	19,612	$	2,254	$	-	$	-
Total securities held-to-maturity		1	$	19,612	$	2,254	$	19,612	$	2,254	$	-	$	-
Available for sale securities
Corporate		14	$	103,694	$	6,306	$	19,209	$	791	$	84,485	$	5,515
Other		1		299		2		-		-		299		2
Total other securities		15		103,993		6,308		19,209		791		84,784		5,517
REMIC and CMO		34		208,825		3,154		195,016		2,516		13,809		638
FNMA		17		75,059		1,432		69,340		1,089		5,719		343
FHLMC		1		3,972		83		3,972		83		-		-
Total mortgage-backed  securities		52		287,856		4,669		268,328		3,688		19,528		981
Total securities available for sale		67	$	391,849	$	10,977	$	287,537	$	4,479	$	104,312	$	6,498

	At December 31, 2016
			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