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

Reporting Entity [Axis]

0000786947 (http://www.sec.gov/CIK)

Income Tax Disclosure [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Income Tax Disclosure [Abstract]
Provision for Income Taxes	The reconciliation between our provision for income taxes and the amounts computed by multiplying our loss before taxes by the U.S. statutory tax rate is as follows (in thousands):       December 31,       2016   2015   Benefit at U.S. statutory 34%  tax rate   $ (2,512)   $ (1,696)   State taxes (benefit), net of federal effect     49     41   Research and development tax credits     -     -   Share-based compensation     159     184   Other     2     11   Change in valuation allowance     2,302     1,460   Provision for income taxes   $ -   $ -
Components Of Deferred Tax Assets	As of December 31, 2016 we had federal research and development tax credits of approximately $1.2 million, which expire in the years 2024 through 2034. We also had approximately $0.2 million of Indiana state research and development tax credits, which will expire in 2017.   The components of our deferred tax assets are as follows:       December 31,       2016   2015       (in thousands)   Deferred tax assets:               Estimated future value of NOLs                - Federal   $ 47,192   $ 52,772    - State     2,135     2,050   Research and development tax credits     1,320     1,394   Share-based compensation     57     38   Other, net     332     368   Total deferred taxes     51,036     56,622   Valuation allowance     (51,036)     (56,622)   Net deferred tax assets   $ -   $ -