REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenues by operating segment and type of service consist of the following (in thousands):


	Three Months Ended September 30,
	2021						2020
	North America		International		Total		North America		International		Total

CoStar	$	174,071	$	9,194	$	183,265	$	158,235	$	7,753	$	165,988
Information Services	29,177		6,749		35,926		26,357		6,817		33,174

Multifamily	171,125		—		171,125		155,184		—		155,184
LoopNet(1)	52,103		424		52,527		44,938		146		45,084
Residential(1)	24,747		—		24,747		—		—		—
Other Marketplaces(1)	31,729		—		31,729		26,190		—		26,190
Total revenues	$	482,952	$	16,367	$	499,319	$	410,904	$	14,716	$	425,620
__________________________

(1) As of September 30, 2021, Commercial Property and Land revenue has been further disaggregated into LoopNet, Residential and Other Marketplaces.


	Nine Months Ended September 30,
	2021						2020
	North America		International		Total		North America		International		Total

CoStar	$	505,470	$	26,958	$	532,428	$	473,363	$	22,634	$	495,997
Information Services	84,959		20,820		105,779		77,069		19,023		96,092

Multifamily	508,629		—		508,629		438,185		—		438,185
LoopNet(1)	151,770		1,082		152,852		131,348		256		131,604
Residential(1)	53,939		—		53,939		—		—		—
Other Marketplaces(1)	83,722		—		83,722		52,748		—		52,748
Total revenues	$	1,388,489	$	48,860	$	1,437,349	$	1,172,713	$	41,913	$	1,214,626
__________________________

(1) As of September 30, 2021, Commercial Property and Land revenue has been further disaggregated into LoopNet, Residential and Other Marketplaces.

Contract with Customer, Asset and Liability

Changes in revenue for the period were as follows (in thousands):


Balance at December 31, 2020	$	77,363
Revenue recognized in the current period from the amounts in the beginning balance	(70,339)
New deferrals, net of amounts recognized in the current period	87,225
Effects of foreign currency	(231)

Balance at September 30, 2021(1)	$	94,018
__________________________

(1) Deferred revenue is comprised of $93 million of current liabilities and $1 million of noncurrent liabilities classified within lease and other long-term liabilities on the Company’s condensed consolidated balance sheet as of September 30, 2021. This balance includes $1 million of deferrals recognized in connection with business acquisitions made in 2021. See Note 5 for details.

Schedule of Commissions Expense

Commissions expense activity for the three and nine months ended September 30, 2021 and 2020 was as follows (in thousands). The Company determined that no deferred commissions were impaired as of September 30, 2021:


	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Commissions incurred	$	30,337	$	25,436	$	83,983	$	69,047
Commissions capitalized in the current period	(17,876)		(16,582)		(49,798)		(48,704)
Amortization of deferred commissions costs	15,881		15,355		46,728		45,017
Total commissions expense	$	28,342	$	24,209	$	80,913	$	65,360