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Property and Equipment - Components of Property and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]    
Equipment $ 22,452 $ 21,451
Furniture and fixtures 7,758 7,684
Leasehold improvements 23,806 23,082
Property, plant and equipment, gross 54,016 52,217
Less accumulated depreciation and amortization (47,735) (45,032)
Total property and equipment, net $ 6,281 $ 7,185