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Valuation and Qualifying Accounts (Tables)
12 Months Ended
Dec. 31, 2020
Valuation And Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts

Allowance for Doubtful Accounts Rollforward (in thousands)

 

 

 

 

 

 

Additions

 

 

 

 

 

 

 

 

 

 

 

Balance at

 

 

Charged to

 

 

 

 

 

 

Balance at

 

 

 

Beginning

 

 

Costs and

 

 

 

 

 

 

End of

 

 

 

of Period

 

 

Expenses

 

 

Deductions(1)

 

 

Period

 

Year Ended December 31, 2020

 

$

17,205

 

 

$

30,046

 

 

$

(12,329

)

 

$

34,922

 

Year Ended December 31, 2019

 

 

13,158

 

 

 

12,972

 

 

 

(8,925

)

 

 

17,205

 

Year Ended December 31, 2018

 

 

13,358

 

 

 

10,707

 

 

 

(10,907

)

 

 

13,158

 

 

 

(1)

Uncollectible accounts written off, net of recoveries.