Annual report pursuant to Section 13 and 15(d)

Income Taxes - Reconciliation Between the Tax Provision Computed at the Federal Statutory Income Tax Rate and Actual Effective Income Tax Rate (Details)

v3.8.0.1
Income Taxes - Reconciliation Between the Tax Provision Computed at the Federal Statutory Income Tax Rate and Actual Effective Income Tax Rate (Details)
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]      
Federal tax at statutory rate 34.00% 34.00% 34.00%
Warrant valuation   7.00% 29.00%
Stock compensation and other permanent differences 6.00%   (1.00%)
Tax credits (4.00%) 2.00% (14.00%)
Impact of 2017 Tax Act on change in deferred 128.00%    
Section 382 limitations 868.00%    
Valuation allowance (1022.00%) (43.00%) (48.00%)
Total 10.00% 0.00% 0.00%