DISAGGREGATION OF REVENUE (Tables)

12 Months Ended

Dec. 31, 2020

Revenue from Contract with Customer [Abstract]

Schedule of disaggregation of revenue

Timing of revenue recognition by revenue category during the period is as follows:

For the year ended December 31, 2020	Products and services transferred at a point in time		Products and services transferred over time		Total
Revenues:
Software licenses and royalties	$	62,029	$	11,135	$	73,164
Subscriptions	—		350,648		350,648
Software services	—		186,409		186,409
Maintenance	—		467,513		467,513
Appraisal services	—		21,127		21,127
Hardware and other	17,802		—		17,802
Total	$	79,831	$	1,036,832	$	1,116,663

For the year ended December 31, 2019	Products and services transferred at a point in time		Products and services transferred over time		Total
Revenues:
Software licenses and royalties	$	84,900	$	15,305	$	100,205
Subscriptions	—		296,352		296,352
Software services	—		213,061		213,061
Maintenance	—		430,318		430,318
Appraisal services	—		23,479		23,479
Hardware and other	23,012		—		23,012
Total	$	107,912	$	978,515	$	1,086,427

For the year ended December 31, 2018	Products and services transferred at a point in time		Products and services transferred over time		Total
Revenues:
Software licenses and royalties	$	75,188	$	18,253	$	93,441
Subscriptions	—		220,547		220,547
Software services	—		191,269		191,269
Maintenance	—		384,521		384,521
Appraisal services	—		21,846		21,846
Hardware and other	23,658		—		23,658
Total	$	98,846	$	836,436	$	935,282

Recurring revenues and non-recurring revenues recognized during the period are as follows:

For the year ended December 31, 2020	Enterprise Software		Appraisal and Tax		Corporate		Totals
Recurring revenues	$	755,508	$	62,652	$	—	$	818,160
Non-recurring revenues	246,390		52,102		11		298,503
Intercompany	19,061		70		(19,131)		—
Total revenues	$	1,020,959	$	114,824	$	(19,120)	$	1,116,663

For the year ended December 31, 2019	Enterprise Software		Appraisal and Tax		Corporate		Totals
Recurring revenues	$	672,804	$	53,866	$	—	$	726,670
Non-recurring revenues	287,225		66,276		6,256		359,757
Intercompany	15,290		206		(15,496)		—
Total revenues	$	975,319	$	120,348	$	(9,240)	$	1,086,427

For the year ended December 31, 2018	Enterprise Software		Appraisal and Tax		Corporate		Totals
Recurring revenues	$	554,581	$	50,488	$	—	$	605,069
Non-recurring revenues	261,297		64,035		4,881		330,213
Intercompany	12,764		391		(13,155)		—
Total revenues	$	828,642	$	114,914	$	(8,274)	$	935,282