CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2011	Oct. 31, 2010
Revenue:
License fees	$ 7,216	$ 6,071	$ 22,110	$ 17,813
Maintenance and other	34,011	33,777	103,742	96,592
Subscription fees	2,283	1,592	6,813	4,077
Professional services	17,223	13,969	49,428	39,073
Total revenue	60,733	55,409	182,093	157,555
Costs of revenue:
License fees	1,248	1,107	3,283	3,900
Maintenance, subscription and other	8,841	7,952	26,683	24,632
Professional services	16,066	13,862	49,095	38,529
Total cost of revenue	26,155	22,921	79,061	67,061
Gross profit	34,578	32,488	103,032	90,494
Operating expenses:
Sales and marketing	13,974	13,024	42,327	38,713
Research and development	8,811	8,134	26,531	26,280
General and administrative	7,495	7,486	22,605	22,654
Total operating expenses	30,280	28,644	91,463	87,647
Operating income	4,298	3,844	11,569	2,847
Other (income) expense:
Interest income	(188)	(140)	(470)	(384)
Interest expense	305	317	862	924
Other (income) expense, net	(41)	139	421	17
Total other expense	76	316	813	557
Income before income taxes	4,222	3,528	10,756	2,290
Income tax expense	1,212	1,855	3,656	1,522
Net income	$ 3,010	$ 1,673	$ 7,100	$ 768
Common Class A [Member]
Basic net income per share
Earnings per share (in dollars per share)	$ 0.19	$ 0.11	$ 0.46	$ 0.05
Diluted net income per share
Earnings per share (in dollars per share)	$ 0.19	$ 0.10	$ 0.44	$ 0.05
Common Class B [Member]
Basic net income per share
Earnings per share (in dollars per share)	$ 0.16	$ 0.09	$ 0.38	$ 0.04
Diluted net income per share
Earnings per share (in dollars per share)	$ 0.15	$ 0.09	$ 0.37	$ 0.04