CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Revenues:
Software licenses and royalties	$ 22,776	$ 21,758
Subscriptions	49,028	39,862
Software services	45,939	42,496
Maintenance	93,897	86,307
Appraisal services	5,394	6,612
Hardware and other	4,140	2,694
Total revenues	221,174	199,729
Cost of revenues:
Software licenses and royalties	778	731
Acquired software	5,382	5,410
Software services, maintenance and subscriptions	106,085	93,540
Appraisal services	3,781	4,197
Hardware and other	2,343	1,316
Total cost of revenues	118,369	105,194
Gross profit	102,805	94,535
Selling, general and administrative expenses	47,604	42,780
Research and development expense	13,048	11,599
Amortization of customer and trade name intangibles	3,315	3,325
Operating income	38,838	36,831
Other income (expense), net	599	(190)
Income before income taxes	39,437	36,641
Income tax provision	1,612	3,872
Net income	$ 37,825	$ 32,769
Earnings per common share:
Basic (USD per share)	$ 1.00	$ 0.89
Diluted (USD per share)	$ 0.95	$ 0.84