Allowance for Credit Losses (Tables)

3 Months Ended

Mar. 31, 2021

Credit Loss [Abstract]

Accounts Receivable, Allowance for Credit Loss

The following table sets forth the Company's allowance for credit losses (in thousands):

	2021		2020
Balance as of January 1	$	33,368	$	26,828
Sensis acquisition, balance as of March 1, 2021	2,733		—
Additions (1)	2,018		10,588
Deductions (2)	(3,318)		(3,630)
Balance as of March 31 (3)	$	34,801	$	33,786

(1)    For the three months ended March 31, 2021 and 2020, represents provision for bad debt expense of $2.0 million and $10.6 million, respectively, which is included in General and administrative expense.

(2)    For the three months ended March 31, 2021 and 2020, represents amounts written off as uncollectible, net of recoveries.(3)    As of March 31, 2021, $34.6 million of the allowance is attributable to Accounts receivable and $0.2 million is attributable to Contract assets. As of March 31, 2020, $33.5 million of the allowance is attributable to accounts receivable and $0.3 million is attributable to contract assets.