XML 51 R39.htm IDEA: XBRL DOCUMENT v3.8.0.1
Securities - Securities with Unrealized Losses (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Available-for-sale securities    
Less than 12 Months, Fair Value   $ 600,696
Less than 12 Months, Unrealized Losses   4,913
12 Months or Longer, Fair Value   551,925
12 Months or Longer, Unrealized Losses   14,571
Fair Value   1,152,621
Unrealized Losses   19,484
Less Than 12 Months, Fair Value $ 749,822  
Less than 12 Months, Unrealized Losses 14,875  
12 Months or Longer, Fair Value 538,187  
12 Months or Longer, Unrealized Losses 22,817  
Total Fair Value 1,288,009  
Total Unrealized Losses 37,692  
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 134,473 25,599
Less Than 12 Months, Unrealized Losses 1,334 97
12 Months or Longer, Fair Value 0 0
12 Months or Longer, Unrealized Losses 0 0
Total Fair Value 134,473 25,599
Total Unrealized Losses 1,334 97
Obligations of U.S. Government sponsored entities    
Available-for-sale securities    
Less than 12 Months, Fair Value   319,545
Less than 12 Months, Unrealized Losses   2,301
12 Months or Longer, Fair Value   39,791
12 Months or Longer, Unrealized Losses   1,032
Fair Value   359,336
Unrealized Losses   3,333
Less Than 12 Months, Fair Value 409,674  
Less than 12 Months, Unrealized Losses 7,130  
12 Months or Longer, Fair Value 53,485  
12 Months or Longer, Unrealized Losses 1,674  
Total Fair Value 463,159  
Total Unrealized Losses 8,804  
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 130,280 20,505
Less Than 12 Months, Unrealized Losses 1,327 90
12 Months or Longer, Fair Value 0 0
12 Months or Longer, Unrealized Losses 0 0
Total Fair Value 130,280 20,505
Total Unrealized Losses 1,327 90
Obligations of U.S. states and political subdivisions    
Available-for-sale securities    
Less than 12 Months, Fair Value   39,571
Less than 12 Months, Unrealized Losses   219
12 Months or Longer, Fair Value   11,729
12 Months or Longer, Unrealized Losses   202
Fair Value   51,300
Unrealized Losses   421
Less Than 12 Months, Fair Value 55,531  
Less than 12 Months, Unrealized Losses 854  
12 Months or Longer, Fair Value 11,677  
12 Months or Longer, Unrealized Losses 527  
Total Fair Value 67,208  
Total Unrealized Losses 1,381  
U.S. Government agencies    
Available-for-sale securities    
Less than 12 Months, Fair Value   33,056
Less than 12 Months, Unrealized Losses   452
12 Months or Longer, Fair Value   86,562
12 Months or Longer, Unrealized Losses   2,219
Fair Value   119,618
Unrealized Losses   2,671
Less Than 12 Months, Fair Value 29,731  
Less than 12 Months, Unrealized Losses 892  
12 Months or Longer, Fair Value 83,490  
12 Months or Longer, Unrealized Losses 3,413  
Total Fair Value 113,221  
Total Unrealized Losses 4,305  
U.S. Government sponsored entities    
Available-for-sale securities    
Less than 12 Months, Fair Value   208,524
Less than 12 Months, Unrealized Losses   1,941
12 Months or Longer, Fair Value   410,767
12 Months or Longer, Unrealized Losses   10,693
Fair Value   619,291
Unrealized Losses   12,634
Less Than 12 Months, Fair Value 254,886  
Less than 12 Months, Unrealized Losses 5,999  
12 Months or Longer, Fair Value 387,360  
12 Months or Longer, Unrealized Losses 16,878  
Total Fair Value 642,246  
Total Unrealized Losses 22,877  
U.S. corporate debt securities    
Available-for-sale securities    
Less than 12 Months, Fair Value   0
Less than 12 Months, Unrealized Losses   0
12 Months or Longer, Fair Value   2,163
12 Months or Longer, Unrealized Losses   338
Fair Value   2,163
Unrealized Losses   338
Less Than 12 Months, Fair Value 0  
Less than 12 Months, Unrealized Losses 0  
12 Months or Longer, Fair Value 2,175  
12 Months or Longer, Unrealized Losses 325  
Total Fair Value 2,175  
Total Unrealized Losses 325  
Equity securities    
Available-for-sale securities    
Less than 12 Months, Fair Value   0
Less than 12 Months, Unrealized Losses   0
12 Months or Longer, Fair Value   913
12 Months or Longer, Unrealized Losses   87
Fair Value   913
Unrealized Losses   87
Obligations of U.S. states and political subdivisions    
Held-to-maturity debt securities    
Less Than 12 Months, Fair Value 4,193 5,094
Less Than 12 Months, Unrealized Losses 7 7
12 Months or Longer, Fair Value 0 0
12 Months or Longer, Unrealized Losses 0 0
Total Fair Value 4,193 5,094
Total Unrealized Losses $ 7 $ 7