Annual report pursuant to Section 13 and 15(d)

Segment Reporting - Schedule of Segment Reporting Information (Details) (Parenthetical)

v3.20.1
Segment Reporting - Schedule of Segment Reporting Information (Details) (Parenthetical) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Net revenues $ 73,459,000 $ 49,539,000
Assets of disposal group including discontinued operation including not held for sale 221,000 306,000
Debt issuance costs 92,000 80,000
Net gain on exchange offer of Series B Preferred Stock of subsidiary 1,596,000
Tax benefit from release of valuation allowance on deferred tax assets 4,000 (1,108,000)
Financed portion amount in the purchase of capital expenditure 393,000 545,000
Long-lived asset (net) 1,065,000 1,285,000
Perma-Fix [Member]    
Long-lived asset (net) 41,000 0
Tax Cuts and Jobs Act [Member]    
Tax benefit from release of valuation allowance on deferred tax assets 1,235,000  
M&EC [Member]    
Net gain on exchange offer of Series B Preferred Stock of subsidiary 1,596,000  
Sales Revenue [Member] | Customer Concentration Risk [Member] | Domestic and Foreign Government [Member]    
Net revenues $ 59,985,000 $ 35,944,000
Concentration risk, percentage 81.70% 72.60%