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

For the Years Ended December 31, 2020, 2019 and 2018

(in thousands)

 

 

 

 

 

 

 

Additions

 

 

 

 

 

 

 

 

 

 

 

Balance, beginning of period

 

 

Charged to costs and expenses

 

 

Charged to other accounts

 

 

Deductions(1)

 

 

Balance, end of period

 

Year ended December 31, 2020:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deducted from asset account – Allowance for uncollectible accounts

 

$

3,742

 

 

$

4,271

 

 

$

 

 

$

(2,347

)

 

$

5,666

 

Year ended December 31, 2019:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deducted from asset account – Allowance for uncollectible accounts

 

 

4,028

 

 

 

2,804

 

 

 

 

 

 

(3,090

)

 

 

3,742

 

Year ended December 31, 2018:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deducted from asset account – Allowance for uncollectible accounts

 

 

3,991

 

 

 

1,978

 

 

 

 

 

 

(1,941

)

 

 

4,028

 

 

(1)

Primarily uncollectible accounts written off — net of recoveries.