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Reclassifications Out of Accumulated Other Comprehensive Loss
 12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Reclassifications Out of Accumulated Other Comprehensive Loss Reclassifications Out of Accumulated Other Comprehensive Loss
MSA Safety IncorporatedNoncontrolling Interests
(In thousands)202020192018202020192018
Pension and other post-retirement benefits(a)
Balance at beginning of period$(124,848)$(115,517)$(97,948)$— $— $— 
Unrecognized net actuarial losses(6,322)(19,479)(37,977)— — — 
Tax benefit1,997 5,847 9,936 — — — 
Total other comprehensive loss before reclassifications, net of tax(4,325)(13,632)(28,041)— — — 
Amounts reclassified from accumulated other comprehensive loss into net income:
Amortization of prior service credit (Note 14)(216)(180)(424)— — — 
Recognized net actuarial losses (Note 14)18,079 11,028 14,507 — — — 
Tax benefit(4,242)(2,775)(3,611)— — — 
Total amount reclassified from accumulated other comprehensive loss, net of tax, into net income13,621 8,073 10,472 — — — 
Reclassification to retained earnings due to the adoption of ASU 2018-02 (Note 1)— (3,772)— — — — 
Total other comprehensive income (loss) $9,296 $(9,331)$(17,569)$— $— $— 
Balance at end of period$(115,552)$(124,848)$(115,517)$— $— $— 
Available-for-sale securities
Balance at beginning of period$6 $(572)$— $— $— $— 
Unrealized (loss) gain on available-for-sale securities (Note 18)(7)578 (572)— — — 
Balance at end of period$(1)$6 $(572)$— $— $— 
Foreign currency translation
Balance at beginning of period$(89,161)$(102,838)$(73,814)$423 $496 $801 
Reclassification from accumulated other comprehensive loss into net income216 
(c)
15,261 
(b)
774 
(c)
— — — 
Foreign currency translation adjustments22,101 (1,584)(29,798)159 (73)(305)
Balance at end of period$(66,844)$(89,161)$(102,838)$582 $423 $496 
(a)Reclassifications out of accumulated other comprehensive loss and into net income are included in the computation of net
periodic pension and other post-retirement benefit costs (refer to Note 14—Pensions and Other Post-retirement Benefits).
(b)Reclassifications out of accumulated other comprehensive loss and into net income relate primarily to the approval of our
plan to close our South Africa affiliates and are included in Currency exchange losses, net, within the Consolidated Statements of Income.
(c)Included in Currency exchange losses, net, on the Consolidated Statements of Income.