Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Narrative) (Details)

v3.21.1
Discontinued Operations (Narrative) (Details)
3 Months Ended 12 Months Ended
Mar. 11, 2020
USD ($)
item
Mar. 31, 2021
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2020
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Proceeds from sale       $ 8,900,000
Gain on sale of business line       $ 2,247,000
Number of buildings leased to purchaser | item 2      
Restructuring expense   $ 0 $ 320,000  
Restructuring payments   186,000    
Restructuring accrual   $ 66,000    
Remainder of Suttle Business Lines [Member] | Discontinued Operations, Disposed of by Sale [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Proceeds from sale $ 8,000,000      
Working capital adjustment, period after close 90 days      
Minimum [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Base rents $ 6,970      
Maximum [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Base rents $ 7,180