Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Narrative)

v3.22.2.2
Commitments and Contingencies (Details Narrative)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2003
Sep. 30, 2022
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
Sep. 30, 2022
CAD ($)
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Self-insured retention       $ 100,000      
Accounts receivable, after allowance for credit loss, current   $ 9,993,000   9,993,000     $ 11,372,000
Restricted cash, noncurrent   11,540,000   11,540,000     11,471,000
Interest income   29,000 $ 2,000 69,000   $ 23,000  
Letters of credit outstanding, amount   3,016,000   3,016,000      
Bond outstanding   59,322,000   59,322,000      
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   28,177,000      
Coverage amount under the policy   21,175,000   21,175,000      
Interest income   $ 29,000 $ 2,000 $ 69,000   $ 23,000  
Insurers obligation to entity on termination of contract   100.00%   100.00%      
American International Group, Inc [Member] | 2003 Closure Policy [Member]              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Restricted cash, noncurrent   $ 11,540,000   $ 11,540,000     11,471,000
Interest income       2,069,000     $ 2,000,000
Canadian Nuclear Laboratories LTD [Member]              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Unpaid receivables       2,385,000      
Accounts receivable, after allowance for credit loss, current   $ 1,044,000   $ 1,044,000      
Bond securing amount         $ 1,900,000