Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0001130166 (http://www.sec.gov/CIK)

Taxes	Period [Axis]
	2016-12-31	2015-12-31
Taxes
Significant components of the entity's deferred tax assets
Net operating loss carryforwards	42,851,000	41,003,000
Depreciation, amortization and impairment of property and equipment	137,000	101,000
Stock options	2,365,000	2,193,000
Research and development credits	4,021,000	4,021,000
Other	xsi:nil	38,000
Deferred tax assets	49,374,000	47,356,000
Valuation allowance for deferred tax assets	(49,374,000)	(47,356,000)
Net deferred taxes	xsi:nil	xsi:nil