Annual report pursuant to Section 13 and 15(d)

SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details)

v3.8.0.1
SECURITIES (Schedule of Gross Unrealized Losses and Fair Value of Investments) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value $ 335,205 $ 472,297
Less than 12 Months, Unrealized Losses (3,498) (9,523)
More than 12 Months, Fair value 197,640 83,152
More than 12 Months, Unrealized Losses (4,188) (1,790)
Fair value, Total 532,845 555,449
Unrealized Losses, Total (7,686) (11,313)
Obligations of states and political subdivisions    
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value 25,790 108,440
Less than 12 Months, Unrealized Losses (132) (3,007)
More than 12 Months, Fair value 16,934 588
More than 12 Months, Unrealized Losses (432) (72)
Fair value, Total 42,724 109,028
Unrealized Losses, Total (564) (3,079)
Mortgage-backed securities    
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value 298,439 316,469
Less than 12 Months, Unrealized Losses (3,267) (4,979)
More than 12 Months, Fair value 136,298 42,096
More than 12 Months, Unrealized Losses (2,902) (392)
Fair value, Total 434,737 358,565
Unrealized Losses, Total (6,169) (5,371)
Corporate bonds and other securities    
Schedule of gross unrealized losses and fair value of investments    
Less than 12 months, Fair value 10,976 47,388
Less than 12 Months, Unrealized Losses (99) (1,537)
More than 12 Months, Fair value 44,408 40,468
More than 12 Months, Unrealized Losses (854) (1,326)
Fair value, Total 55,384 87,856
Unrealized Losses, Total $ (953) $ (2,863)