Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Details Textual)

v3.10.0.1
Discontinued Operations (Details Textual) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Dec. 14, 2017
Aug. 21, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Common stock, issued (in shares) 28,037,713 5,206,174 4,382,872  
Aurora Energy Partners [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Disposal group, including discontinued operation, liabilities     $ 120,000,000  
Subsidiaries [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Noncontrolling ownership percentage of subsidiary       50.00%
Navitus Partners, LLC [Member] | Aurora Energy Partners [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Common stock, issued (in shares)     4,382,872  
Navitus Partners, LLC [Member] | Subsidiaries [Member]        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]        
Noncontrolling ownership percentage of subsidiary       50.00%