Note 2 - Investment Securities (Tables)

9 Months Ended

Sep. 30, 2015

Investments, Debt and Equity Securities [Abstract]

Marketable Securities [Table Text Block]

September 30, 2015			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Securities Available for Sale:
U.S. Government Agencies
Mortgage-Backed	$	271,010	$	485	$	(4,115	)	$	267,380
State, County & Municipal		4,207		44		(20	)		4,231
	$	275,217	$	529	$	(4,135	)	$	271,611
Securities Held to Maturity:
State, County and Municipal	$	28	$	-	$	-		$	28

December 31, 2014			Gross		Gross
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
Securities Available for Sale:
U.S. Government Agencies
Mortgage-Backed	$	278,419	$	156	$	(7,511	)	$	271,064
State, County & Municipal		3,516		27		(13	)		3,530
	$	281,935	$	183	$	(7,524	)	$	274,594
Securities Held to Maturity:
State, County and Municipal	$	30	$	-	$	-		$	30

Investments Classified by Contractual Maturity Date [Table Text Block]

	Securities
	Available for Sale				Held to Maturity
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due In One Year or Less	$	331	$	333	$	28	$	28
Due After One Year Through Five Years		784		790		-		-
Due After Five Years Through Ten Years		1,595		1,624		-		-
Due After Ten Years		1,497		1,484		-		-
	$	4,207	$	4,231	$	28	$	28
Mortgage-Backed Securities		271,010		267,380		-		-
	$	275,217	$	271,611	$	28	$	28

Schedule of Unrealized Loss on Investments [Table Text Block]

	Less Than 12 Months					12 Months or Greater					Total
			Gross					Gross					Gross
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
September 30, 2015
U.S. Government Agencies
Mortgage-Backed	$	27,858	$	(162	)	$	142,938	$	(3,953	)	$	170,796	$	(4,115	)
State, County and Municipal		996		(20	)		-		-			996		(20	)
	$	28,854	$	(182	)	$	142,938	$	(3,953	)	$	171,792	$	(4,135	)
December 31, 2014
U.S. Government Agencies
Mortgage-Backed	$	66,609	$	(397	)	$	183,646	$	(7,114	)	$	250,255	$	(7,511	)
State, County and Municipal		-		-			1,379		(13	)		1,379		(13	)
	$	66,609	$	(397	)	$	185,025	$	(7,127	)	$	251,634	$	(7,524	)