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(1) Summary of Significant Accounting Policies (Details - Cash flow) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Cash paid for amounts included in the measurement of lease liabilities:        
Operating cash flows from operating leases $ 1,892 $ 1,932 $ 3,822 $ 3,858
Operating cash flows from finance leases 278 248 552 481
Financing cash flows from finance leases $ 30 $ 45 $ 65 $ 91