XML 167 R86.htm IDEA: XBRL DOCUMENT v3.8.0.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Other Comprehensive Income (Loss), before Reclassification Adjustments and Tax [Abstract]        
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax $ 8,447 $ 751 $ (2,200)  
Unrealized gain (loss) on derivatives 810 809 (1,020)  
Retirement obligations 2,775 884 (11,014)  
Foreign currency translation     50  
Total 12,032 2,444 (14,184)  
Other Comprehensive Income (Loss) Reclassifications before Tax [Abstract]        
Unrealized gain (loss) on investment securities 1,649 234 1,505  
Unrealized gain (loss) on derivatives 0 0 0  
Retirement obligation 1,511 1,195 1,475  
Foreign currency translation     0  
Total 138 (961) 30  
Transactions Pre-tax        
Unrealized gain (loss) on investment securities 6,798 517 (3,705)  
Unrealized gain (loss) on derivatives 810 809 (1,020)  
Retirement obligation 4,286 2,079 (9,539)  
Foreign currency translation     50  
Total 11,894 3,405 (14,214)  
Transactions Tax-effect        
Unrealized gain (loss) on investment securities (2,431) (133) 1,278  
Unrealized gain (loss) on derivatives (296) (301) 370  
Retirement obligation (1,114) (834) 3,395  
Foreign currency translation     0  
Total (3,841) (1,268) 5,043  
Transactions Net of tax        
Unrealized gain (loss) on investment securities 4,367 384 (2,427)  
Unrealized gain (loss) on derivatives 514 508 (650)  
Retirement obligation 3,172 1,245 (6,144)  
Foreign currency translation 0 0 50  
Total 8,053 2,137 (9,171)  
Balances Net of tax        
Unrealized gain (loss) on investment securities (182) (4,549) (4,933) $ (2,506)
Unrealized gain (loss) on derivatives (577) (1,091) (1,599) (949)
Retirement obligation (19,631) (22,803) (24,048) (17,904)
Foreign currency translation     0 (50)
Total $ (20,390) $ (28,443) $ (30,580) $ (21,409)