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Schedule V - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule V - Valuation and Qualifying Accounts
SCHEDULE V – VALUATION AND QUALIFYING ACCOUNTS
The following table summarizes activity in the Company’s estimated credit losses and allowance for doubtful accounts for the periods presented (in thousands):
 
  Additions  
Beginning
Balance		Charges to
Earnings		Charges to
Other
Accounts		DeductionsEnding
Balance
Description     
Year Ended December 31, 2020     
Estimated credit losses (1)$749 528 — 646 $631 
Year Ended December 31, 2019     
Allowance for doubtful accounts$711 456 — 418 $749 
Year Ended December 31, 2018     
Allowance for doubtful accounts$680 470 — 439 $711 

(1) See “Part II—Item 8—Note 2 (Summary of Significant Accounting Policies)”. On January 1, 2020, the Company adopted ASU 2016-13, Financial Instruments-Credit Losses (Topic ASC 326), which introduces a new process for recognizing credit losses on financial instruments based on an estimate of current expected credit losses. The new ASU applies to premiums receivable and results for reporting periods beginning after January 1, 2020 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable U.S. GAAP.