Annual report pursuant to Section 13 and 15(d)

BENEFIT PLANS - Amounts Recognized in OCI (Details)

v3.3.1.900
BENEFIT PLANS - Amounts Recognized in OCI (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Pretax Roll Forward:      
Balance, beginning of year $ (347,202) $ (240,345) $ (363,691)
Net actuarial (loss) gain:      
Amounts arising during the year (25,520) (133,085) 118,666
Amortization included in net periodic benefit costs 19,693 19,056 29,194
Prior service cost:      
Amounts arising during the year 0 8,781 0
Amortization included in net periodic benefit costs (1,968) (1,609) (24,514)
Balance, end of year (354,997) (347,202) (240,345)
Tax Roll Forward:      
Balance, beginning of year 121,522 84,122 127,292
Net actuarial (loss) gain:      
Amounts arising during the year 8,931 46,580 (41,532)
Amortization included in net periodic benefit costs (6,892) (6,670) (10,218)
Prior service cost:      
Amounts arising during the year 0 (3,073) 0
Amortization included in net periodic benefit costs 689 563 8,580
Balance, end of year 124,250 121,522 84,122
After-tax Roll Forward:      
Balance, beginning of year (225,680) (156,223) (236,399)
Net actuarial (loss) gain:      
Amounts arising during the year (16,589) (86,505) 77,134
Amortization included in net periodic benefit costs 12,801 12,386 18,976
Prior service cost:      
Amounts arising during the year 0 5,708 0
Amortization included in net periodic benefit costs (1,279) (1,046) (15,934)
Balance, end of year $ (230,747) $ (225,680) $ (156,223)