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4. Furniture and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Furniture and equipment, gross $ 9,357 $ 8,296
Less: accumulated depreciation and amortization (7,520) (6,544)
Furniture and equipment, net 1,837 1,752
Furniture and Fixtures [Member]    
Furniture and equipment, gross 1,647 1,566
Computer and Telephone Equipment [Member]    
Furniture and equipment, gross 6,203 5,470
Leasehold Improvements [Member]    
Furniture and equipment, gross $ 1,507 $ 1,260