Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Narrative) (Details)

v3.20.1
Discontinued Operations (Narrative) (Details)
3 Months Ended 12 Months Ended
Mar. 11, 2020
USD ($)
item
Apr. 05, 2019
USD ($)
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Restructuring expense         $ 364,000
Restructuring payments       $ 364,000  
Restructuring accrual       0  
Restricted cash       $ 679,006  
Suttle FutureLink Fiber Business Line [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   $ 5,000,000      
Restricted cash   $ 500,000      
Gain on sale of FutureLink Fiber business line     $ 2,967,000    
Subsequent Event [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Number of buildings leased to purchaser | item 2        
Subsequent Event [Member] | 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        
Minimum [Member] | Subsequent Event [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Base rents 6,970        
Maximum [Member] | Subsequent Event [Member]          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Base rents $ 7,180