(1) Summary of Significant Accounting Policies (Details - Supplemental balance sheet information related to leases) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Operating Leases
Operating lease right-of-use assets	$ 25,819	$ 25,819
Less: Accumulated amortization right-of-use assets	(20,296)	(17,624)
Operating lease right-of-use assets, net	5,523	8,195
Operating lease liabilities	(6,213)	(9,058)
Finance Leases
Property and equipment, at cost	3,407	3,407
Less: Accumulated depreciation	(2,853)	(2,348)
Property and equipment, net	554	1,059
Finance lease liabilities	$ (597)	$ (1,124)
Operating Lease, Weighted Average Discount Rate, Percent	5.00%	5.00%
Finance Lease, Weighted Average Discount Rate, Percent	6.50%	6.50%