PROPERTY, EQUIPMENT AND SOFTWARE, NET (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant, Equipment and Software

The following summarizes property, equipment and software, net as of December 31, 2020 and 2019 (in thousands):

	December 31,
	2020		2019
Warehouse equipment	$	—	$	5,144
Furniture and fixtures	5,005		9,113
Leasehold improvements	24,808		47,927
Office equipment	676		1,735
Purchased software	435		7,207
Computer hardware	121,307		143,118
Internally-developed software (1)	264,103		222,140
Total property, equipment and software, gross	416,334		436,384
Less: accumulated depreciation and amortization	(331,050)		(311,434)
Property, equipment and software, net	$	85,284	$	124,950

(1)The net carrying amount of internally-developed software was $57.9 million and $71.1 million as of December 31, 2020 and 2019.

Depreciation and amortization expense on property, equipment and software is classified as follows in the accompanying consolidated statements of operations for the years ended December 31, 2020, 2019 and 2018 (in thousands):

	Year Ended December 31,
	2020		2019		2018
Service cost of revenue	$	28,443	$	28,917	$	28,102
Product cost of revenue	9,434		6,466		8,467
Selling, general and administrative	39,915		56,027		64,761
Total	$	77,792	$	91,410	$	101,330

The following table summarizes depreciation and amortization of property, equipment and software and intangible assets by reportable segment for the years ended December 31, 2020, 2019 and 2018 (in thousands):

	Year Ended December 31,
	2020		2019		2018
North America	$	78,805	$	89,083	$	101,419
International	8,717		16,682		14,409
Consolidated total	$	87,522	$	105,765	$	115,828

The following table summarizes expenditures for additions to tangible long-lived assets by reportable segment for the years ended December 31, 2020, 2019 and 2018 (in thousands):

	Year Ended December 31,
	2020		2019		2018
North America	$	2,000	$	6,791	$	6,194
International	2,707		6,103		10,393
Consolidated total	$	4,707	$	12,894	$	16,587

Schedule of Impairment Charges

The following table summarizes impairment for long-lived assets by asset type for the year ended December 31, 2020 (in thousands), of which $9.6 million is included in $22.4 million of Long-lived asset impairment and $5.6 million is included in $21.6 million of Restructuring and related charges on the consolidated statements of operations:

Long-Lived Asset Category	Impairment
Property, equipment and software, net
Furniture and fixtures	$	413
Leasehold improvements	8,419
Office equipment	198
Purchased software	14
Computer hardware	2,842
Capitalized software	304
Internally-developed software	2,988
Total	$	15,178