Schedule of Changes in Stockholders' Deficit (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Equity [Abstract]
Beginning balance	$ (83,311)	$ (99,261)	$ (79,379)	$ (95,914)
Net loss	(1,769)	(1,998)	(5,701)	(5,367)
Stock-based compensation	7	11	7	33
Ending balance	$ (85,073)	$ (101,248)	$ (85,073)	$ (101,248)