Reclassification Adjustment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Licenses	$ 591	$ 616	$ 649	$ 2,264	$ 2,090	$ 2,153
Services	851	901	718	3,226	1,687	1,676
Total net revenues	1,442	1,517	1,367	5,490	3,777	3,829
Operating expenses:
Cost of service revenues	159	137	127	638	355	356
Research and development	1,178	1,090	999	4,441	3,698	4,574
Originally reported:
Licenses	912	937	913
Services	530	580	454
Total net revenues	1,442	1,517	1,367
Operating expenses:
Cost of service revenues	103	106	100
Research and development	1,234	1,121	1,026
Restatement adjustment
Licenses					(237,000)
Services					237,000
Operating expenses:
Cost of service revenues					108,000
Research and development					$ (109,000)