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SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS
SCHEDULE II. VALUATION AND QUALIFYING ACCOUNTS
Continuing Operations
(In thousands)
COLUMN ACOLUMN BCOLUMN C COLUMN D COLUMN E
  Additions (Deductions) Additions (Deductions)  
DescriptionBalance at
Beginning of
Period		Charged to
Cost and
Expenses		 Due to
Currency
Translation
Adjustments		Other Balance at End
of Period
For the year 2020:
Allowance for Expected Credit Losses and Doubtful Accounts$13,512 $1,960 $(81)$(7,890)(a)$7,501 
Deferred Tax Assets—Valuation Allowance127,074 10,133 3,331 77 (b)140,615 
For the year 2019:       
Allowance for Doubtful Accounts$4,586 $7,507 $370 $1,049 (a)$13,512 
Deferred Tax Assets—Valuation Allowance137,450 (7,395)448 (3,429)(b)127,074 
For the year 2018:      
Allowance for Doubtful Accounts$4,470 $380  $(149)$(115)(a)$4,586 
Deferred Tax Assets—Valuation Allowance172,846 (20,104)(8,612)(6,680)(b)137,450 
(a)Includes the write-off of previously reserved accounts receivable balances. Also, 2020 includes the acquisition of ESOL and 2019 includes the acquisition of Clean Earth. Prior to the adoption of the expected credit loss allowance methodology on January 1, 2020, the Company established an allowance for doubtful accounts based upon a specific-identification method as well as historical collection experience, as appropriate.
(b)Includes a decrease of $15.5 million related to foreign tax credit carryforwards due to statutory limitation expiration in the U.S., an increase of $13.0 million related to pension adjustments recorded through AOCI and an increase of $3.7 million related to tax rate change in certain foreign jurisdictions in 2020. Includes a decrease of $5.6 million related to the loss of certain tax attributes in certain foreign dormant entities due to merger and liquidation, an increase of $0.9 million related to pension adjustments recorded through AOCI and an increase of $0.8 million related to the investment tax credit which is unlikely to be used before expiration in certain foreign jurisdictions in 2019. Includes a decrease of $5.4 million related to a change in estimate of interest deductions and a decrease of $1.1 million due to capital loss carryforward expiring in the U.S. in 2018.