Disaggregation of Revenue (Tables)

12 Months Ended

Dec. 31, 2019

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, 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

For the year ended December 31, 2017	Products and services transferred at a point in time		Products and services transferred over time		Total
Revenues:
Software licenses and royalties	$	69,167	$	17,075	$	86,242
Subscriptions	—		172,176		172,176
Software services	—		180,460		180,460
Maintenance	—		359,319		359,319
Appraisal services	—		25,023		25,023
Hardware and other	17,679		—		17,679
Total	$	86,846	$	754,053	$	840,899

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

For the year ended December 31, 2019	Enterprise Software		Appraisal and Tax		Corporate			Totals
Recurring revenues	$	690,156	$	36,514	$	—		$	726,670
Non-recurring revenues	295,193		58,308		6,256			359,757
Intercompany	15,496		—		(15,496		)	—
Total revenues	$	1,000,845	$	94,822	$	(9,240	)	$	1,086,427

For the year ended December 31, 2018	Enterprise Software		Appraisal and Tax		Corporate			Totals
Recurring revenues	$	570,645	$	34,424	$	—		$	605,069
Non-recurring revenues	269,400		55,932		4,881			330,213
Intercompany	13,155		—		(13,155		)	—
Total revenues	$	853,200	$	90,356	$	(8,274	)	$	935,282

For the year ended December 31, 2017	Enterprise Software		Appraisal and Tax		Corporate			Totals
Recurring revenues	$	502,018	$	29,477	$	—		$	531,495
Non-recurring revenues	252,690		52,102		4,612			309,404
Intercompany	10,425		—		(10,425		)	—
Total revenues	$	765,133	$	81,579	$	(5,813	)	$	840,899