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Restructuring and Other Initiatives (Tables)
6 Months Ended
Jun. 30, 2021
Restructuring and Related Activities [Abstract]  
Schedule of Restructuring Reserves and Charges
The following table summarizes the reserves and charges related to restructuring and other initiatives, including postemployment benefit reserves and charges:
Three Months EndedSix Months Ended
June 30, 2021June 30, 2020June 30, 2021June 30, 2020
Balance at beginning of period$275 $583 $352 $564 
Additions, interest accretion and other55 35 58 254 
Payments(29)(163)(108)(338)
Revisions to estimates and effect of foreign currency25 — 
Balance at end of period$303 $480 $303 $480