Basis of Presentation (Tables)

12 Months Ended

Dec. 31, 2023

Schedule of Finite-Lived Intangible Assets

We amortize finite-lived intangible assets over their estimated useful lives as follows.


	Basis of amortization	Amortization period (in years)
Customer relationships	Straight-line and Curve of Economic Benefit(1)	10-17
Marketing assets	Straight-line and Curve of Economic Benefit(1)	14-15
Developed technology	Straight-line and Curve of Economic Benefit(1)	3-14
Content	Straight-line	9

(1)Certain of the customer relationships, marketing assets and developed technology assets are amortized on a curve that represents the expected period of economic benefit.

Accounts Receivable, Allowance for Credit Loss

Below is a summary of the changes in our allowance for credit losses.


Years ended December 31, (in thousands)	Balance at beginning of year		Provision/ adjustment		Write-off		Recovery		Balance at end of year
2023	$	6,022	$	2,012	$	(2,539)	$	601	$	6,096
2022	9,375		1,281		(5,162)		528		6,022
2021	9,016		4,483		(4,565)		441		9,375

The amount of write-offs during the year ended December 31, 2023 was lower than during the same periods in 2022 and 2021 as we experienced payment delays during those years related to the COVID-19 pandemic.

Allowance for sales returns

We maintain a reserve for returns and credits which is estimated based on several factors including historical experience, known credits yet to be issued, the aging of customer accounts and the nature of service level commitments. A considerable amount of judgment is required in assessing these factors. Provisions for sales returns and credits are charged against the related revenue items.

Below is a summary of the changes in our allowance for sales returns.


Years ended December 31, (in thousands)	Balance at beginning of year		Provision/ adjustment		Deduction		Balance at end of year
2023	$	1,296	$	2,488	$	(2,973)	$	811
2022	1,780		4,785		(5,269)		1,296
2021	1,276		6,967		(6,463)		1,780