Quarterly report pursuant to Section 13 or 15(d)

Nature of Business and Significant Accounting Policies (Details)

v3.21.1
Nature of Business and Significant Accounting Policies (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Dec. 23, 2019
USD ($)
Jun. 24, 2019
USD ($)
Feb. 04, 2019
USD ($)
Jan. 29, 2019
USD ($)
Oct. 31, 2018
USD ($)
Jun. 27, 2018
USD ($)
shares
Feb. 28, 2018
USD ($)
Dec. 04, 2017
USD ($)
Apr. 29, 2015
shares
Dec. 10, 2014
shares
Nov. 12, 2014
shares
Feb. 28, 2021
USD ($)
Feb. 29, 2020
USD ($)
Feb. 28, 2021
USD ($)
shares
Feb. 29, 2020
USD ($)
shares
May 31, 2020
USD ($)
Jun. 01, 2019
USD ($)
May 31, 2019
USD ($)
May 31, 2018
USD ($)
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions (in Shares) | shares                   6,250,000                  
Equity Method Investment, Ownership Percentage                     55.60%                
Stockholders' Equity Note, Stock Split, Conversion Ratio                   0.625                  
Proceeds from Collection of Notes Receivable                           $ 1,544,291 $ 325,000        
Asset Impairment Charges                       $ 2,498,706 $ 0 2,498,706 0        
Financing Receivable, after Allowance for Credit Loss, Current         $ 5,000,000             0   0          
Interest Receivable, Current                       0   0   $ 3,322      
Payments to Acquire Notes Receivable                           0 175,000        
Cash and Cash Equivalents, at Carrying Value                       2,231,934 3,039,095 2,231,934 3,039,095 2,925,568   $ 10,525,791  
Accounts Receivable, Credit Loss Expense (Reversal)                       0 0 5,927 0        
Goodwill, Impairment Loss                               25,185,003      
Goodwill           $ 25,742,899           557,896   557,896   557,896      
Advertising Expense                       383,128 220,927 826,867 424,019        
Research and Development Expense                       8,334 $ 0 $ 20,726 $ 0        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           87,861,815 87,577,583        
Operating Lease, Right-of-Use Asset                       1,136,695   $ 1,136,695   1,403,429 $ 2,703,821    
Operating Lease, Liability                       1,158,740   1,158,740     $ 2,675,310 2,675,310  
Principal [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Asset Impairment Charges                           2,497,884          
Accrued Interest [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Asset Impairment Charges                           822          
Reverse Merger with CLS Labs [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Stock Issued During Period, Shares, New Issues (in Shares) | shares                 15,000,000                    
Oasis Acquisition [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross           2,050,000 $ 6,200,000                        
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions             10.00%                        
Liabilities Assumed           204,457 $ 204,457                        
Business Combination, Consideration Transferred           27,975,650                          
Business Combination, Consideration Transferred, Liabilities Incurred           3,810,820                          
Business Combination, Contingent Consideration, Liability                                   1,000,000 $ 678,111
Goodwill, Impairment Loss                               25,185,003      
Goodwill           25,742,899                   $ 557,896   $ 25,742,899  
Oasis Acquisition [Member] | Deposit [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross               $ 250,000                      
Oasis Acquisition [Member] | Additional Payments [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross             $ 1,800,000 $ 1,800,000                      
In Good Health [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross         35,000,000                            
Business Combination, Consideration Transferred         47,500,000                            
Business Combination, Consideration Transferred, Liabilities Incurred         7,500,000                            
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned         5,000,000                            
Business Combination, Contingent Consideration, Liability         $ 2,500,000                            
Debt Instrument, Interest Rate, Stated Percentage         6.00%                            
Interest Rate, Default         15.00%                            
Proceeds from Collection of Notes Receivable                       196,765   1,696,765          
Asset Impairment Charges                           2,498,706          
Financing Receivable, after Allowance for Credit Loss                       0   0          
CannAssist LLC [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Equity Method Investment, Ownership Percentage       80.00%                              
Debt Instrument, Face Amount       $ 500,000                              
Debt Instrument, Interest Rate, Stated Percentage       8.00%                              
Proceeds from Collection of Notes Receivable $ 342,567                                    
Line of Credit Facility, Description       Any draws on the line of credit in excess of $150,000 will only be made in the sole discretion of the Company.                              
Payments to Acquire Notes Receivable   $ 175,000 $ 150,000                                
Financing Receivable, after Allowance for Credit Loss                       $ 0   $ 0          
Oasis LLCs [Member] | Oasis Acquisition [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross           5,995,543                          
Debt Instrument, Face Amount           $ 4,000,000                          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares           22,058,823                          
CLS Labs, Inc. [Member] | Shares of CLS Holdings USA, Inc. [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Subsidiary or Equity Method Investee, Cumulative Number of Shares Issued for All Transactions (in Shares) | shares                     10,000,000                
Oasis LLCs [Member] | Oasis Acquisition [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Payments to Acquire Businesses, Gross           $ 5,995,543                          
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners           90.00%                          
Debt Instrument, Face Amount           $ 4,000,000                          
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in Shares) | shares           22,058,823                          
Principal [Member] | CannAssist LLC [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable 325,000                                    
Accrued Interest [Member] | CannAssist LLC [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable $ 17,567                                    
Warrant [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           54,410,145 54,835,145        
Equity Unit Purchase Agreements [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           7,676,974 7,676,974        
Convertible Debt Securities [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           25,454,696 24,678,796        
Stock Payable [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in Shares) | shares                           320,000 386,668        
Notes Receivable [Member] | Principal [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable                           $ 2,901,569          
Notes Receivable [Member] | Accrued Interest [Member]                                      
Nature of Business and Significant Accounting Policies (Details) [Line Items]                                      
Proceeds from Collection of Notes Receivable                           $ 220,196