Quarterly Results (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Quarterly Results [Abstract]
Software license revenue	$ 3,619	$ 4,699	$ 4,274	$ 4,208	$ 2,796	$ 2,400	$ 2,552	$ 2,110	$ 16,800	$ 9,858	$ 9,563
Maintenance revenue	2,218	2,106	1,861	1,717	1,649	1,527	1,505	1,538	7,902	6,219	6,322
Professional services revenue	178	368	412	346	393	486	397	532	1,304	1,808	1,789
Cost of software licenses	527	509	659	575	575	530	587	545	2,270	2,237	2,382
Cost of maintenance and services	510	668	684	668	596	655	606	680	2,530	2,537	2,893
Expenses	5,105	5,263	4,899	4,396	3,507	3,034	3,765	2,738
Income (loss) from operations	(127)	733	305	632	160	194	(504)	217	1,543	67	391
Net income (loss)	$ (277)	$ 548	$ 160	$ 603	$ 201	$ 213	$ (511)	$ 229	$ 1,034	$ 132	$ 380
Net income (loss) per share - basic	$ (0.04)	$ 0.09	$ 0.03	$ 0.10	$ 0.03	$ 0.04	$ (0.09)	$ 0.04	$ 0.17	$ 0.02	$ 0.06
Net income (loss) per share - diluted	$ (0.04)	$ 0.08	$ 0.02	$ 0.09	$ 0.03	$ 0.03	$ (0.09)	$ 0.04	$ 0.15	$ 0.02	$ 0.06