Annual report pursuant to Section 13 and 15(d)

Note 2 - Debt Securities - Amortized Cost and Fair Value of Contractual Securities (Details)

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Note 2 - Debt Securities - Amortized Cost and Fair Value of Contractual Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Available for sale, amortized cost $ 596,225 $ 538,381
Available for sale, fair value 590,184 538,080
Held to maturity, amortized cost 250
Held to maturity debt securities, fair value 250
Due Within One Year [Member]    
Available for sale, amortized cost 38,343 22,122
Available for sale, fair value 38,225 22,172
Due from One to Five Years [Member]    
Available for sale, amortized cost 167,873 160,773
Available for sale, fair value 166,380 160,563
Held to maturity, amortized cost 250
Held to maturity debt securities, fair value 250
Due from Five to Ten Years [Member]    
Available for sale, amortized cost 77,811 73,362
Available for sale, fair value 78,276 74,684
Due After Ten Years [Member]    
Available for sale, amortized cost 2,954 3,947
Available for sale, fair value 2,999 4,163
Collateralized Mortgage Backed Securities [Member]    
Available for sale, amortized cost 309,244 278,177
Available for sale, fair value $ 304,304 $ 276,498