6. Commitments and Contingencies (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Operating lease expense	$ 96	$ 258	$ 301	$ 761
Right of use asset	1,800		1,800
Operating lease liability	2,000		2,000
Settlement and contingency related accrual	$ 0	$ 2,200	$ 0	$ 2,200