(1) Summary of Significant Accounting Policies (Details - Supplemental balance sheet information related to leases) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Operating Leases
Operating lease right-of-use assets	$ 25,820	$ 25,819
Less: Accumulated amortization right-of-use assets	18,972	17,624
Operating lease right-of-use assets, net	6,848	8,195
Operating lease liabilities	(7,684)	(9,058)
Finance Leases
Property and equipment, at cost	3,407	3,407
Less: Accumulated depreciation	2,620	2,348
Property and equipment, net	787	1,059
Finance lease liabilities	$ (842)	$ (1,124)
Operating Lease, Weighted Average Discount Rate, Percent	5.00%	5.00%
Finance Lease, Weighted Average Discount Rate, Percent	6.50%	6.50%