Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Product sales	$ 1,120	$ 1,249	$ 4,189	$ 5,184
Royalties	2,504	2,133	5,994	6,113
Total Revenue	3,624	3,382	10,183	11,297
Cost of revenue:
Product sales	512	814	1,764	2,696
Software amortization	90	0	270	0
Total Cost of revenue	602	814	2,034	2,696
Gross profit	3,022	2,568	8,149	8,601
Operating expenses:
Selling, general and administrative	1,430	1,436	4,522	5,041
Research and development	722	636	2,266	2,033
Restructuring	0	0	0	126
Total Operating expenses	2,152	2,072	6,788	7,200
Operating income from operations	870	496	1,361	1,401
Other, net	0	(27)	33	(27)
Income from operations before income taxes	870	469	1,394	1,374
Income tax expense	0	0	4	4
Net income	$ 870	$ 469	$ 1,390	$ 1,370
Net income per share:
Basic (in dollars per share)	$ 0.17	$ 0.09	$ 0.27	$ 0.27
Diluted (in dollars per share)	$ 0.17	$ 0.09	$ 0.27	$ 0.27
Weighted average number of common shares outstanding:
Basic (in shares)	5,138	5,059	5,117	5,043
Diluted (in shares)	5,151	5,068	5,121	5,045