XML 36 R25.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 2 - Investment Securities - Investment Securities Available for Sale (Details)
$ in Thousands
Sep. 30, 2017
USD ($)
Dec. 31, 2016
USD ($)
Number of investment positions - less than twelve months 92 165
Fair value - less than twelve months $ 106,956 $ 201,145
Gross unrealized losses - less than twelve months $ 835 $ 4,463
Number of investment positions - more than twelve months 67 6
Fair value - more than twelve months $ 102,140 $ 3,033
Gross unrealized losses - more than twelve months $ 1,547 $ 62
Number of investment positions 159 171
Fair value $ 209,096 $ 204,178
Gross unrealized losses $ 2,382 $ 4,525
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]    
Number of investment positions - less than twelve months 58 78
Fair value - less than twelve months $ 69,281 $ 101,838
Gross unrealized losses - less than twelve months $ 603 $ 2,336
Number of investment positions - more than twelve months 23 1
Fair value - more than twelve months $ 37,452 $ 531
Gross unrealized losses - more than twelve months $ 750 $ 13
Agency Collateralized Mortgage Obligations [Member]    
Number of investment positions - less than twelve months 8 13
Fair value - less than twelve months $ 6,137 $ 11,767
Gross unrealized losses - less than twelve months $ 54 $ 239
Number of investment positions - more than twelve months 11 5
Fair value - more than twelve months $ 7,870 $ 2,502
Gross unrealized losses - more than twelve months $ 146 $ 49
US Government Agencies Debt Securities [Member]    
Number of investment positions - less than twelve months 10 20
Fair value - less than twelve months $ 22,547 $ 59,126
Gross unrealized losses - less than twelve months $ 90 $ 759
Number of investment positions - more than twelve months 12  
Fair value - more than twelve months $ 46,092  
Gross unrealized losses - more than twelve months $ 408  
Municipal Notes [Member]    
Number of investment positions - less than twelve months 16 54
Fair value - less than twelve months $ 8,991 $ 28,414
Gross unrealized losses - less than twelve months $ 88 $ 1,129
Municipal Bonds [Member]    
Number of investment positions - more than twelve months 21  
Fair value - more than twelve months $ 10,726  
Gross unrealized losses - more than twelve months $ 243