Annual report pursuant to Section 13 and 15(d)

Benefit Plans - Accumulated Other Comprehensive Income (Details)

v3.10.0.1
Benefit Plans - Accumulated Other Comprehensive Income (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Defined Benefit Pension Plans | U.S.    
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax    
Prior service credit $ 0 $ 0
Net gain (loss) 1,618 13,943
Gross amount recognized 1,618 13,943
Deferred income taxes (400) (3,444)
Net amount recognized 1,218 10,499
Defined Benefit Pension Plans | Foreign    
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax    
Prior service credit (170) 0
Net gain (loss) (2,133) (3,923)
Gross amount recognized (2,303) (3,923)
Deferred income taxes 474 1,052
Net amount recognized (1,829) (2,871)
Supplemental Retirement Plans    
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax    
Net gain (loss) 1,055 761
Gross amount recognized 1,055 761
Deferred income taxes (260) (188)
Net amount recognized 795 573
Other Postretirement Benefits Plans    
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax    
Prior service credit 525 366
Net gain (loss) 500 719
Gross amount recognized 1,025 1,085
Deferred income taxes (195) (200)
Net amount recognized $ 830 $ 885