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Note 4 - Debt and Equity Securities (Tables)
6 Months Ended
Jun. 30, 2014
Note 4 - Debt and Equity Securities (Tables) [Line Items]  
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]
   
Amortized
Cost
   
Fair Value
   
Gross
Unrealized
Gains
   
Gross
Unrealized
Losses
 
   
(In thousands)
 
Corporate
  $ 110,686     $ 112,577     $ 2,286     $ 395  
Municipals
    133,892       135,262       1,977       607  
Mutual funds
    26,937       26,937       -       -  
Other
    16,343       13,361       -       2,982  
Total other securities
    287,858       288,137       4,263       3,984  
REMIC and CMO
    512,453       514,622       8,616       6,447  
GNMA
    33,588       35,642       2,186       132  
FNMA
    206,666       207,819       4,072       2,919  
FHLMC
    12,236       12,462       267       41  
Total mortgage-backed securities
    764,943       770,545       15,141       9,539  
Total securities available for sale
  $ 1,052,801     $ 1,058,682     $ 19,404     $ 13,523  
   
Amortized
Cost
   
Fair Value
   
Gross
Unrealized
Gains
   
Gross
Unrealized
Losses
 
   
(In thousands)
 
Corporate
  $ 100,362     $ 101,711     $ 2,316     $ 967  
Municipals
    127,967       123,423       93       4,637  
Mutual funds
    21,565       21,565       -       -  
Other
    18,160       14,935       -       3,225  
Total other securities
    268,054       261,634       2,409       8,829  
REMIC and CMO
    494,984       489,670       6,516       11,830  
GNMA
    38,974       40,874       2,325       425  
FNMA
    217,615       212,322       2,233       7,526  
FHLMC
    13,297       13,290       226       233  
Total mortgage-backed securities
    764,870       756,156       11,300       20,014  
Total securities available for sale
  $ 1,032,924     $ 1,017,790     $ 13,709     $ 28,843  
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]
   
Total
   
Less than 12 months
   
12 months or more
 
   
Fair Value
   
Unrealized
Losses
   
Fair Value
   
Unrealized
Losses
   
Fair Value
   
Unrealized
Losses
 
   
(In thousands)
 
Corporate
  $ 49,605     $ 395     $ 9,809     $ 191     $ 39,796     $ 204  
Municipals
    44,859       607       17,307       49       27,552       558  
Other
    6,580       2,982       -       -       6,580       2,982  
Total other securities
    101,044       3,984       27,116       240       73,928       3,744  
REMIC and CMO
    236,976       6,447       89,203       1,022       147,773       5,425  
GNMA
    8,989       132       -       -       8,989       132  
FNMA
    96,273       2,919       -       -       96,273       2,919  
FHLMC
    7,192       41       -       -       7,192       41  
Total mortgage-backed securities
    349,430       9,539       89,203       1,022       260,227       8,517  
Total securities available for sale
  $ 450,474     $ 13,523     $ 116,319     $ 1,262     $ 334,155     $ 12,261  
   
Total
   
Less than 12 months
   
12 months or more
 
   
Fair Value
   
Unrealized
Losses
   
Fair Value
   
Unrealized
Losses
   
Fair Value
   
Unrealized
Losses
 
   
(In thousands)
 
Corporate
  $ 39,033     $ 967     $ 39,033     $ 967     $ -     $ -  
Municipals
    100,875       4,637       95,958       4,187       4,917       450  
Other
    6,337       3,225       -       -       6,337       3,225  
Total other securities
    146,245       8,829       134,991       5,154       11,254       3,675  
                                                 
REMIC and CMO
    298,165       11,830       279,743       10,650       18,422       1,180  
GNMA
    9,213       425       9,213       425       -       -  
FNMA
    139,999       7,526       131,248       6,654       8,751       872  
FHLMC
    7,478       233       7,478       233       -       -  
Total mortgage-backed securities
    454,855       20,014       427,682       17,962       27,173       2,052  
Total securities available for sale
  $ 601,100     $ 28,843     $ 562,673     $ 23,116     $ 38,427     $ 5,727  
Schedule of Unrealized Loss on Investments [Table Text Block]
(in thousands)
 
Amortized Cost
   
Fair Value
   
Gross Unrealized
Losses Recorded
In AOCI
   
Ending Credit
Loss Amount
 
                         
Trust preferred securities (1)
  $ 9,262     $ 6,290     $ 2,972     $ 3,738  
Total
  $ 9,262     $ 6,290     $ 2,972     $ 3,738  
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]
   
For the three months ended
June 30,
   
For the six months ended
June 30,
 
   
2014
   
2013
   
2014
   
2013
 
   
(In thousands)
 
Beginning balance
  $ 3,738     $ 6,009     $ 3,738     $ 6,178  
                                 
Recognition of actual losses
    -       (319 )     -       (488 )
OTTI charges due to credit loss recorded in earnings
    -       503       -       503  
Securities sold during the period
    -       -       -       -  
Securities where there is an intent to sell or requirement to sell
    -       -       -       -  
Ending balance
  $ 3,738     $ 6,193     $ 3,738     $ 6,193  
Investments Classified by Contractual Maturity Date [Table Text Block]
   
Amortized
Cost
   
Fair Value
 
   
(In thousands)
 
             
Due in one year or less
  $ 44,295     $ 44,424  
Due after one year through five years
    41,225       43,266  
Due after five years through ten years
    63,537       63,354  
Due after ten years
    138,801       137,093  
Total other securities
    287,858       288,137  
Mortgage-backed securities
    764,943       770,545  
Total securities available for sale
  $ 1,052,801     $ 1,058,682  
Realized Gain (Loss) on Investments [Table Text Block]
   
For the three months ended
June 30,
   
For the six months ended
June 30,
 
   
2014
   
2013
   
2014
   
2013
 
   
(In thousands)
 
Gross gains from the sale of securities
  $ -     $ 18     $ -     $ 3,217  
Gross losses from the sale of securities
    -       -       -       (341 )
Net gains from the sale of securities
  $ -     $ 18     $ -     $ 2,876  
Trust Preferred Securities [Member]
 
Note 4 - Debt and Equity Securities (Tables) [Line Items]  
Available-for-sale Securities [Table Text Block]
                                 
Deferrals/Defaults
       
Issuer
Type
 
Class
   
Performing
Banks
   
Amortized
Cost
   
Fair
Value
   
Cumulative
Credit Related
OTTI
   
Actual as a
Percentage
of Original
Security
   
Expected
Percentage
of Performing
Collateral
   
Current
Lowest
Rating
 
               
(Dollars in thousands)
                   
                                                 
Single issuer
  n/a     1     $ 300     $ 290     $ -    
None
   
None
   
BB-
 
Pooled issuer
  B1     16       5,617       3,040       2,383     22.5%     0.0%     C  
Pooled issuer
  C1     15       3,645       3,250       1,355     21.3%     0.0%     C  
Total
              $ 9,562     $ 6,580     $ 3,738