PROPERTY PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2020

PROPERTY PLANT AND EQUIPMENT [ABSTRACT]

PROPERTY, PLANT AND EQUIPMENT

(5)PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following (in thousands):

	December 31,
	2020		2019
Land and buildings	$	32,944	$	32,942
Computer equipment and software		474,415		447,260
Telephone equipment		51,717		49,447
Furniture and fixtures		85,149		85,191
Leasehold improvements		193,823		186,083
Motor vehicles		258		260
Construction-in-progress and other		—		—
Property, plant and equipment, gross		838,306		801,183
Less: Accumulated depreciation and amortization		(659,600)		(624,550)
Property, plant and equipment, net	$	178,706	$	176,633

Depreciation and amortization expense for property, plant and equipment was $62.7 million, $57.5 million and $58.4 million for the years ended December 31, 2020, 2019 and 2018, respectively.

Included in the computer equipment and software is internally developed software of $16.2 million net and $15.3 million net as of December 31, 2020 and 2019, respectively.