Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Securities - Amortized Cost And Fair Value Of Contractual Securities (Details)

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Note 4 - Securities - Amortized Cost And Fair Value Of Contractual Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Available for sale, amortized cost $ 453,384 $ 423,330
Available for sale, fair value 453,956 422,375
Held to maturity, amortized cost 72,057 62,564
Held to maturity debt securities, fair value 73,180 63,302
Due Within One Year [Member]    
Available for sale, amortized cost 19,508 28,270
Available for sale, fair value 19,587 28,400
Due from One to Five Years [Member]    
Available for sale, amortized cost 154,295 152,347
Available for sale, fair value 155,590 153,003
Held to maturity, amortized cost 250 250
Held to maturity debt securities, fair value 250 250
Due from Five to Ten Years [Member]    
Available for sale, amortized cost 25,356 13,870
Available for sale, fair value 25,394 13,782
Held to maturity, amortized cost 34,248 34,251
Held to maturity debt securities, fair value 34,879 34,617
Collateralized Mortgage Backed Securities [Member]    
Available for sale, amortized cost 254,225 228,843
Available for sale, fair value 253,385 227,190
Held to maturity, amortized cost 28,658 19,164
Held to maturity debt securities, fair value 28,701 19,240
Due After Ten Years [Member]    
Held to maturity, amortized cost 8,901 8,899
Held to maturity debt securities, fair value $ 9,350 $ 9,195