Quarterly report pursuant to Section 13 or 15(d)

Note 10 -Fair Value Measurement - Financial Assets and Liabilities Carried at Fair Value on Recurring Basis or Nonrecurring Basis (Details)

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Note 10 -Fair Value Measurement - Financial Assets and Liabilities Carried at Fair Value on Recurring Basis or Nonrecurring Basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Cash and due from banks $ 54,993 $ 56,855 [1]
Available for sale debt securities, at fair value 453,956 422,375 [1]
Held to maturity debt securities (fair value of $73,180 and $63,302 at March 31, 2017 and December 31, 2016, respectively) 72,057 62,564 [1]
Equity securities 1,034 1,024 [1]
Federal funds sold 127,390 160,435 [1]
Mortgage loans held for sale 6,599 4,675 [1]
Bank owned life insurance contracts 115,112 114,388 [1]
Loans, net 5,098,092 4,859,877 [1]
Federal funds purchased 358,241 355,944 [1]
Fair Value, Inputs, Level 1 [Member] | Reported Value Measurement [Member]    
Cash and due from banks 338,174 623,562
Fair Value, Inputs, Level 1 [Member] | Estimate of Fair Value Measurement [Member]    
Cash and due from banks 338,174 623,562
Fair Value, Inputs, Level 2 [Member] | Reported Value Measurement [Member]    
Available for sale debt securities, at fair value 453,956 422,375
Held to maturity debt securities (fair value of $73,180 and $63,302 at March 31, 2017 and December 31, 2016, respectively) 34,547 25,052
Equity securities 1,034 1,024
Federal funds sold 127,390 160,435
Mortgage loans held for sale 6,599 4,675
Bank owned life insurance contracts 115,112 114,388
Deposits 5,361,532 5,420,311
Federal funds purchased 358,241 355,944
Other borrowings 55,169 55,262
Fair Value, Inputs, Level 2 [Member] | Estimate of Fair Value Measurement [Member]    
Available for sale debt securities, at fair value 453,956 422,375
Held to maturity debt securities (fair value of $73,180 and $63,302 at March 31, 2017 and December 31, 2016, respectively) 34,892 25,431
Equity securities 1,034 1,024
Federal funds sold 127,390 160,435
Mortgage loans held for sale 6,718 4,736
Bank owned life insurance contracts 115,112 114,388
Deposits 5,358,573 5,417,320
Federal funds purchased 358,241 355,944
Other borrowings 54,234 54,203
Fair Value, Inputs, Level 3 [Member] | Reported Value Measurement [Member]    
Held to maturity debt securities (fair value of $73,180 and $63,302 at March 31, 2017 and December 31, 2016, respectively) 37,510 37,512
Loans, net 5,098,092 4,859,877
Fair Value, Inputs, Level 3 [Member] | Estimate of Fair Value Measurement [Member]    
Held to maturity debt securities (fair value of $73,180 and $63,302 at March 31, 2017 and December 31, 2016, respectively) 38,288 37,871
Loans, net $ 5,111,532 $ 4,872,689
[1] Derived from audited financial statements