Consolidated Statements of Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues:
Software licenses and royalties	$ 40,841	$ 33,928	$ 32,594
Subscriptions	61,864	44,618	31,160
Software services	93,267	83,408	69,617
Maintenance	191,720	171,851	146,498
Appraisal services	20,825	22,543	23,228
Hardware and other	8,126	6,956	6,294
Total revenues	416,643	363,304	309,391
Cost of revenues:
Software licenses and royalties	2,377	1,983	3,034
Acquired software	2,078	1,888	1,125
Software services, maintenance and subscriptions	199,617	171,584	143,776
Appraisal services	13,809	14,889	14,550
Hardware and other	5,559	5,258	4,994
Total cost of revenues	223,440	195,602	167,479
Gross profit	193,203	167,702	141,912
Selling, general and administrative expenses	98,289	86,706	75,650
Research and development expense	23,269	20,140	16,414
Amortization of customer and trade name intangibles	4,517	4,279	3,331
Operating income	67,128	56,577	46,517
Other expense, net	1,309	2,709	2,404
Income before income taxes	65,819	53,868	44,113
Income tax provision	26,718	20,874	16,556
Net income	39,101	32,994	27,557
Earnings per common share:
Basic	$ 1.23	$ 1.09	$ 0.88
Diluted	$ 1.13	$ 1.00	$ 0.83
Unrealized gains (losses) on investment securities available-for-sale	341	134	(123)
Income tax expense (benefit) related to components of other comprehensive income (loss)	119	47	(43)
Other comprehensive income (loss), net of tax	222	87	(80)
Comprehensive income	$ 39,323	$ 33,081	$ 27,477