(1) Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Accounting Policies [Abstract]
Stock-based compensation	$ 412	$ 481	$ 898	$ 1,119
Unrecognized stock-based compensation costs	4,200		$ 4,200
Weighted-average period for unrecognized costs			2 years 7 months 6 days
Intrinsic value options outstanding	3,500		$ 3,500
Intrinsic value of options exercisable	$ 3,000		$ 3,000
Options exercised			256,600	482,500
Intrinsic value of options exercised			$ 285	$ 1,400
Shares available for grant	21,000		21,000