Acquisitions And Disposals - Schedule of Fair Value of Purchase Consideration (Details) $ in Thousands	Dec. 31, 2017 USD ($)
Total consideration received	$ 6,525
Cash, Less Transaction Costs [Member]
Total consideration received	1,950
Laramide Common Stock [Member]
Total consideration received	568
Laramide Common Stock Purchase Warrants [Member]
Total consideration received	506
Notes Receivable [Member]
Total consideration received	$ 3,501