Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues:
Software licenses and royalties	$ 8,830	$ 7,563
Subscriptions	13,473	9,968
Software services	20,461	18,530
Maintenance	46,050	39,850
Appraisal services	5,591	5,682
Hardware and other	1,394	1,130
Total revenues	95,799	82,723
Cost of revenues:
Software licenses and royalties	426	566
Acquired software	549	410
Software services, maintenance and subscriptions	46,382	39,813
Appraisal services	3,799	3,796
Hardware and other	798	719
Total cost of revenues	51,954	45,304
Gross profit	43,845	37,419
Selling, general and administrative expenses	22,646	21,335
Research and development expense	5,598	5,094
Amortization of customer and trade name intangibles	1,131	946
Operating income	14,470	10,044
Other expense, net	338	703
Income before income taxes	14,132	9,341
Income tax provision	5,639	3,660
Net income	8,493	5,681
Earnings per common share:
Basic	$ 0.27	$ 0.19
Diluted	$ 0.25	$ 0.17
Comprehensive income:
Comprehensive income	$ 8,493	$ 5,681