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Summary of Significant Accounting Policies (Details - Supplemental balance sheet information related to leases) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Operating Leases    
Operating lease right-of-use assets $ 29,575 $ 28,397
Less: Accumulated amortization right-of-use assets (25,673) (22,613)
Operating lease right-of-use assets, net 3,902 5,784
Operating lease liabilities (4,222) (6,234)
Finance Leases    
Property and equipment, at cost 3,454 3,407
Less: Accumulated depreciation (3,373) (3,301)
Property and equipment, net 81 106
Finance lease liabilities $ (85) $ (177)
Weighted average discount rate operating lease 5.00% 5.00%
Weighted average discount rate finance lease 6.50% 6.50%