Property and Equipment

3 Months Ended

Mar. 31, 2021

Property, Plant and Equipment [Abstract]

6. Property and Equipment

Property and equipment, net consisted of the following:


	As of December 31,		As of March 31,
	2020		2021
Furniture and fixtures	$	2,341	$	2,348
Computer and office equipment	4,077		4,190
Telecommunications equipment	60,651		61,753
Leasehold improvements	6,285		6,280
Software	3,901		4,877
Internal-use software development	19,968		20,884
Automobile	502		512
Total cost	97,725		100,844
Less—accumulated depreciation	(46,080)		(50,184)
Total property and equipment, net	$	51,645	$	50,660

The Company capitalized $790 and $1,103 of software development costs for the three months ended March 31, 2020 and 2021, respectively.

Amortization expense related to capitalized software development costs were $582 and $420 for the three months ended March 31, 2020 and 2021, respectively. As of March 31, 2021, unamortized implementation costs related to cloud computing arrangements are $533, of which $140 are included in prepaid expenses and other current assets and $393 are included in other long-term assets.

The Company leases automobiles under leases accounted for as finance leases with expiration dates ranging from December 31, 2021 to April 30, 2025. As of March 31, 2021, cost and accumulated depreciation of the assets under finance leases recorded by the Company were $502 and $74, respectively.

The Company recognized depreciation expense, which includes amortization of capitalized software development costs, as follows:


	Three months ended March 31,
		2020		2021
Cost of revenue		$	2,334	$	3,033
Research and development		115		240
Sales and marketing		29		29
General and administrative		690		874
Total depreciation expense		$	3,168	$	4,176