Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Fair value measurements using input type
Cash and cash equivalents	$ 2,174	$ 2,114
Restricted cash		284
Derivative liability		(3)
Derivative liabilities - phantom option		(11)
Total	2,174	2,390
Level 1 [Member]
Fair value measurements using input type
Cash and cash equivalents	2,174	2,114
Restricted cash		284
Derivative liability
Derivative liabilities - phantom option
Total	2,174	2,398
Level 2 [Member]
Fair value measurements using input type
Cash and cash equivalents
Restricted cash
Derivative liability		3
Derivative liabilities - phantom option		(11)
Total		(8)
Level 3 [Member]
Fair value measurements using input type
Cash and cash equivalents
Restricted cash
Derivative liability
Derivative liabilities - phantom option
Total