CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Software licenses and royalties	$ 19,842	$ 19,930	$ 55,172	$ 54,331
Subscriptions	44,840	36,869	125,889	104,926
Software services	47,479	44,738	139,869	133,208
Maintenance	92,285	83,000	268,556	237,775
Appraisal services	6,290	6,541	19,268	20,083
Hardware and other	3,410	3,419	14,057	12,439
Total revenues	214,146	194,497	622,811	562,762
Cost of revenues:
Software licenses and royalties	826	623	2,204	1,927
Acquired software	5,473	5,598	16,243	16,737
Software services, maintenance and subscriptions	98,036	88,623	287,748	260,610
Appraisal services	4,089	4,053	12,568	12,473
Hardware and other	2,293	2,120	10,408	8,481
Total cost of revenues	110,717	101,017	329,171	300,228
Gross profit	103,429	93,480	293,640	262,534
Selling, general and administrative expenses	44,656	42,007	131,249	124,998
Research and development expense	11,834	11,070	35,307	31,362
Amortization of customer and trade name intangibles	3,492	3,458	10,413	10,273
Operating income	43,447	36,945	116,671	95,901
Other income (expense), net	75	(526)	(216)	(1,713)
Income before income taxes	43,522	36,419	116,455	94,188
Income tax provision	5,259	989	14,308	15,527
Net income	$ 38,263	$ 35,430	$ 102,147	$ 78,661
Earnings per common share:
Basic (USD per share)	$ 1.02	$ 0.97	$ 2.74	$ 2.16
Diluted (USD per share)	$ 0.97	$ 0.91	$ 2.60	$ 2.02