Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Narrative)

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Commitments and Contingencies (Details Narrative)
 1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2003
Mar. 31, 2022
USD ($)
Mar. 31, 2022
CAD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Accounts Receivable, after Allowance for Credit Loss, Current   $ 10,322,000     $ 11,372,000
Restricted Cash, Noncurrent   11,482,000     11,471,000
Interest Income, Other   11,000   $ 18,000  
Letters of Credit Outstanding, Amount   3,020,000      
Bond outstanding   51,295,000      
American International Group, Inc [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Period of finite risk insurance policy 25 years        
Maximum allowable coverage of insurance policy   28,177,000      
Coverage amount under the policy   21,047,000      
Interest Income, Other   $ 11,000   $ 18,000  
Insurers obligation to entity on termination of contract   100.00%      
American International Group, Inc [Member] | 2003 Closure Policy [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Restricted Cash, Noncurrent   $ 11,482,000     11,471,000
Interest Income, Other   2,011,000     $ 2,000,000
Canadian Nuclear Laboratories LTD [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Unpaid receivables and unbilled costs   2,722,000      
Accounts Receivable, after Allowance for Credit Loss, Current   $ 1,150,000      
Bond securing amount     $ 1,900,000