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Property and Equipment (Notes)
6 Months Ended
Jun. 30, 2021
Property, Plant and Equipment [Abstract]  
Property and Equipment [Text Block] Property and Equipment
Major classes of property and equipment are summarized as follows (in thousands):
June 30,
2021
December 31,
2020
Furniture and equipment$216,294 $194,470 
Leasehold improvements68,049 62,293 
Finance leases767 705 
Property and equipment—gross285,110 257,468 
Accumulated depreciation and amortization(156,555)(136,172)
Property and equipment—net$128,555 $121,296 
Depreciation and amortization expense related to property and equipment for the three months ended June 30, 2021 and 2020 was $11.7 million and $9.7 million, respectively. Depreciation and amortization expense related to property and equipment for the six months ended June 30, 2021 and 2020 was $23.2 million and $18.5 million, respectively.