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Stockholders' Equity (10K) (Details) - $ / shares
shares in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Sep. 30, 2014
Dec. 31, 2013
Dec. 31, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Option term 4 years 4 months 20 days        
Options outstanding 106,495 72,012 70,960 69,537 44,529
Excercisable stock options 69,757 57,058 55,102 43,379  
Weighted average exercise price $ 0.04 $ 0.04 $ 0.05 $ 0.05 $ 0.05
1999 Stock Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized for issuance   4,000      
Option vesting period   Quarterly over 3 years      
Date adopted by stockholders   June 1, 2009      
Option term   7 years      
Options outstanding   25      
Excercisable stock options   25      
Weighted average exercise price   $ 0.200      
2009 Stock Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized for issuance   7,000      
Option vesting period   Quarterly over 3 years      
Option term   7 years      
Options outstanding   425      
Excercisable stock options   425      
Weighted average exercise price   $ 0.105      
2011 Stock Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Shares authorized for issuance   150,000      
Option vesting period   Immediate/Quarterly over 3 years      
Date adopted by stockholders   November 1, 2011      
Option term   7 years      
Options outstanding   71,437      
Excercisable stock options   56,483      
Weighted average exercise price   $ 0.046      
Individual Stock Option Plans [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Option vesting period   Quarterly over 3 years      
Option term   7 years      
Options outstanding   125      
Excercisable stock options   125      
Weighted average exercise price   $ 0.150