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1. Summary of Significant Accounting Policies (Details - Lease - Cash flow) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases $ 1,901 $ 5,678
Operating cash flows from finance leases 37 73
Financing cash flows from finance leases $ 9 $ 17