XML 31 R51.htm IDEA: XBRL DOCUMENT v3.20.1
Note 10 - BioLargo Engineering, Science and Technologies, LLC (Details Textual) - USD ($)
1 Months Ended 12 Months Ended 25 Months Ended
Nov. 04, 2019
Sep. 30, 2017
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2019
Share-based Payment Arrangement, Noncash Expense, Total     $ 1,522,000 $ 1,335,000  
Percentage of Profits Interests Vested 2.50%        
Percentage of Option to Purchase Shares of Common Stock 10.00%        
Seven Employees Working at BioLargo Engineering, Science & Technologies, LLC [Member]          
Deferred Compensation Arrangement with Individual, Requisite Service Period   5 years      
Potential Ownership Percentage of Subsidiary Held by Subsidiary Employees Based on Performance   30.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross 175,000        
Incentive Issuance Stipulations for Subsidiary Employees, Accounts Receivable Collected by Year One of Operation   90.00%      
Incentive Issuance Stipulations for Subsidiary Employees, Profit Earned in Year One of Operation   10.00%      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value $ 44,000        
Seven Employees Working at BioLargo Engineering, Science & Technologies, LLC [Member] | Non-Qualified Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross   1,750,000      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period   5 years      
Share-based Payment Arrangement, Noncash Expense, Total         $ 0
BioLargo Engineering, Science & Technologies, LLC [Member]          
Noncontrolling Interest, Ownership Percentage by Parent   100.00% 97.50%