CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Revenue:
Software licenses	$ 1,562	$ 1,843	$ 5,370	$ 4,683
Software maintenance	1,123	929	2,164	1,810
Services	759	683	1,235	1,376
Hardware sales	1,129		1,129
Royalties	277	624	568	1,115
Total revenue	4,850	4,079	10,466	8,984
Costs and expenses:
Cost of hardware sales	813		813
Cost of services	359	361	581	717
Research and development	1,495	1,529	3,052	2,965
Selling and marketing	972	995	2,067	2,074
General and administrative	928	1,075	1,659	2,061
Total costs and expenses	4,567	3,960	8,172	7,817
Operating income before patent related income	283	119	2,294	1,167
Gain on sale of patent assets		71,226		71,226
Income from patent arrangement			780
Operating income after patent related income	283	71,345	3,074	72,393
Other income		58		85
Interest income	78	40	161	92
Income from continuing operations before income taxes	361	71,443	3,235	72,570
Provision for income taxes	54	16,667	1,071	16,670
Income from continuing operations	307	54,776	2,164	55,900
Income from discontinued operations, net of income taxes		150		144
Net income	307	54,926	2,164	56,044
Basic net income per share:
Basic net income per share from continuing operations (in dollars per share)	$ 0.01	$ 2.51	$ 0.10	$ 2.63
Basic net income per share from discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.00	$ 0.01
Basic net income per share (in dollars per share)	$ 0.01	$ 2.52	$ 0.10	$ 2.64
Diluted net income per share:
Diluted net income per share from continuing operations (in dollars per share)	$ 0.01	$ 2.48	$ 0.10	$ 2.59
Diluted net income per share from discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.00	$ 0.01
Diluted net income per share (in dollars per share)	$ 0.01	$ 2.49	$ 0.10	$ 2.60
Weighted-average shares - basic (in shares)	22,517	21,757	22,514	21,241
Weighted-average shares - diluted (in shares)	22,687	22,099	22,625	21,583
Comprehensive income:
Net income	307	54,926	2,164	56,044
Other comprehensive income:
Unrealized gains (losses) on available for sale securities	(38)	(39)	20	20
Comprehensive income	$ 269	$ 54,887	$ 2,184	$ 56,064