Condensed Consolidated Statements Of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Revenues:
Software licenses	$ 8,294	$ 8,308	$ 15,736	$ 15,130
Subscriptions	10,553	7,277	20,521	14,241
Software services	21,737	17,992	40,267	34,756
Maintenance	42,060	35,056	81,910	70,568
Appraisal services	5,771	5,987	11,453	12,184
Hardware and other	2,953	2,115	4,204	3,249
Total revenues	91,368	76,735	174,091	150,128
Cost of revenues:
Software licenses	484	989	1,050	1,784
Acquired software	482	244	892	539
Software services, maintenance and subscriptions	43,118	35,502	82,931	70,682
Appraisal services	3,876	3,702	7,672	7,526
Hardware and other	2,709	2,161	3,428	2,837
Total cost of revenues	50,669	42,598	95,973	83,368
Gross profit	40,699	34,137	78,118	66,760
Selling, general and administrative expenses	21,699	18,466	43,034	35,754
Research and development expense	5,408	5,035	10,502	9,584
Amortization of customer and trade name intangibles	1,137	803	2,083	1,607
Operating income	12,455	9,833	22,499	19,815
Other expense, net	773	524	1,476	1,024
Income before income taxes	11,682	9,309	21,023	18,791
Income tax provision	4,577	3,685	8,237	7,439
Net income	7,105	5,624	12,786	11,352
Earnings per common share:
Basic	$ 0.24	$ 0.18	$ 0.42	$ 0.36
Diluted	$ 0.22	$ 0.17	$ 0.39	$ 0.34
Comprehensive income:
Net income	$ 7,105	$ 5,624	$ 12,786	$ 11,352