CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Software licenses and royalties	$ 17,107	$ 17,551	$ 35,330	$ 34,401
Subscriptions	40,947	33,968	81,049	68,057
Software services	47,372	46,040	92,390	88,470
Maintenance	89,412	78,743	176,271	154,775
Appraisal services	6,366	6,984	12,978	13,542
Hardware and other	7,919	5,686	10,647	9,020
Total revenues	209,123	188,972	408,665	368,265
Cost of revenues:
Software licenses and royalties	647	666	1,378	1,304
Acquired software	5,360	5,680	10,770	11,139
Software services, maintenance and subscriptions	96,172	86,717	189,712	171,987
Appraisal services	4,282	4,458	8,479	8,420
Hardware and other	6,799	4,515	8,115	6,361
Total cost of revenues	113,260	102,036	218,454	199,211
Gross profit	95,863	86,936	190,211	169,054
Selling, general and administrative expenses	43,451	42,232	86,593	82,991
Research and development expense	11,874	10,336	23,473	20,292
Amortization of customer and trade name intangibles	3,463	3,453	6,921	6,815
Operating income	37,075	30,915	73,224	58,956
Other expense, net	(101)	(720)	(291)	(1,187)
Income before income taxes	36,974	30,195	72,933	57,769
Income tax provision	5,396	5,188	9,049	14,538
Net income	$ 31,578	$ 25,007	$ 63,884	$ 43,231
Earnings per common share:
Basic (USD per share)	$ 0.85	$ 0.69	$ 1.72	$ 1.19
Diluted (USD per share)	$ 0.81	$ 0.65	$ 1.63	$ 1.11