Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenue:
Program revenue	$ 6,869,000	$ 8,844,000	$ 20,160,000	$ 30,857,000
Licensing and royalty revenue	1,753,000	1,730,000	6,495,000	5,964,000
Total revenue	8,622,000	10,574,000	26,655,000	36,821,000
Cost of revenue:
Cost of program revenue	2,864,000	3,431,000	8,106,000	12,284,000
Cost of licensing and royalty revenue	11,000	25,000	303,000	100,000
Total cost of revenue	2,875,000	3,456,000	8,409,000	12,384,000
Gross profit	5,747,000	7,118,000	18,246,000	24,437,000
Operating expenses:
Research and development	4,835,000	8,451,000	17,328,000	22,279,000
Sales and marketing	874,000	1,792,000	3,285,000	5,866,000
General and administrative	2,000,000	2,667,000	7,225,000	7,936,000
Restructuring charges		1,120,000	1,351,000	1,120,000
Total operating expenses	7,709,000	14,030,000	29,189,000	37,201,000
Loss from operations	(1,962,000)	(6,912,000)	(10,943,000)	(12,764,000)
Other income (expense):
Interest income (expense), net	70,000	51,000	182,000	123,000
Other income (expense), net	64,000	89,000	243,000	204,000
Total other income (expense), net	134,000	140,000	425,000	327,000
Loss before provision for income taxes	(1,828,000)	(6,772,000)	(10,518,000)	(12,437,000)
Provision for income taxes		3,000	800	7,000
Net loss	$ (1,828,000)	$ (6,775,000)	$ (10,519,000)	$ (12,444,000)
Net loss per share, basic and diluted	$ (0.04)	$ (0.14)	$ (0.21)	$ (0.25)
Weighted-average number of shares used in computing net loss per share, basic and diluted	49,554,701	49,466,137	49,543,014	49,366,982
Related Party Transactions.
Revenue:
Program revenue				$ 267,000
Licensing and royalty revenue		$ 359,000	$ 383,000	1,379,000
Total revenue		359,000	383,000	1,646,000
Cost of revenue:
Cost of program revenue				102,000
Cost of licensing and royalty revenue		2,000	1,000	27,000
Total cost of revenue		$ 2,000	$ 1,000	$ 129,000