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Note 4 - Investment Securities Available-for-Sale (Tables)

12 Months Ended

Dec. 31, 2014

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

December 31, 2014			Gross Unrealized		Gross Unrealized		Estimated Fair
(dollars in thousands)	Amortized Cost		Gains		Losses		Value
U. S. Government agency securities	$	29,434	$	500	$	40	$	29,894
Residential mortgage backed securities		241,120		1,716		2,516		240,320
Municipal bonds		106,983		4,850		121		111,712
Other equity investments		396		21		-		417
	$	377,933	$	7,087	$	2,677	$	382,343

December 31, 2013 (dollars in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
U. S. Government agency securities	$	46,640	$	843	$	148	$	47,335
Residential mortgage backed securities		234,206		1,143		6,675		228,674
Municipal bonds		102,423		2,017		2,700		101,740
Other equity investments		396		-		12		384
	$	383,665	$	4,003	$	9,535	$	378,133

Schedule of Unrealized Loss on Investments [Table Text Block]

December 31, 2014	Less than 12 Months				12 Months or Greater				Total
(dollars in thousands)	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
U. S. Government agency securities	$	2,001	$	7	$	1,750	$	33	$	3,751	$	40
Residential mortgage backed securities		49,644		221		86,028		2,295		135,672		2,516
Municipal bonds		4,974		14		10,915		107		15,889		121
	$	56,619	$	242	$	98,693	$	2,435	$	155,312	$	2,677

December 31, 2013	Less than 12 Months				12 Months or Greater				Total
(dollars in thousands)	Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses		Estimated Fair Value		Unrealized Losses
U. S. Government agency securities	$	4,782	$	148	$	-	$	-	$	4,782	$	148
Residential mortgage backed securities		155,475		5,992		15,658		683		171,133		6,675
Municipal bonds		50,450		2,512		3,196		188		53,646		2,700
Other equity investments		-		-		165		12		165		12
	$	210,707	$	8,652	$	19,019	$	883	$	229,726	$	9,535

Available-for-sale Securities [Table Text Block]

	December 31, 2014				December 31, 2013
(dollars in thousands)	Amortized Cost		Estimated Fair Value		Amortized Cost		Estimated Fair Value
U. S. Government agency securities maturing:
One year or less	$	2,998	$	3,051	$	19,025	$	19,133
After one year through five years		19,947		20,276		27,615		28,202
Five years through ten years		6,489		6,567		-		-
Residential mortgage backed securities		241,120		240,320		234,206		228,674
Municipal bonds maturing:
One year or less		2,410		2,438		-		-
After one year through five years		47,038		49,607		25,718		26,008
Five years through ten years		54,983		56,927		76,705		75,732
After ten years		2,552		2,740		-		-
Other equity investments		396		417		396		384
	$	377,933	$	382,343	$	383,665	$	378,133

- Definition

Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities.

+ References+ Details