Condensed Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Revenues:
Software licenses	$ 7,442	$ 6,822
Subscriptions	9,968	6,964
Software services	18,530	16,764
Maintenance	39,850	35,512
Appraisal services	5,682	6,197
Hardware and other	1,251	1,134
Total revenues	82,723	73,393
Cost of revenues:
Software licenses	566	795
Acquired software	410	295
Software services, maintenance and subscriptions	39,813	35,180
Appraisal services	3,796	3,824
Hardware and other	719	676
Total cost of revenues	45,304	40,770
Gross profit	37,419	32,623
Selling, general and administrative expenses	21,335	17,288
Research and development expense	5,094	4,549
Amortization of customer and trade name intangibles	946	804
Operating income	10,044	9,982
Other expense, net	703	500
Income before income taxes	9,341	9,482
Income tax provision	3,660	3,754
Net income	5,681	5,728
Earnings per common share:
Basic	$ 0.19	$ 0.18
Diluted	$ 0.17	$ 0.17
Comprehensive income:
Net income	$ 5,681	$ 5,728