Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

Basis of Presentation and Summary of Significant Accounting Policies

Schedule of cash and cash equivalent and restricted cash

The following table summarizes cash and cash equivalent and restricted cash in the consolidated balance sheets (in thousands):

	2020		2019
Cash and cash equivalents	$	90,626	$	58,524
Restricted		15,500		15,500
	$	106,126	$	74,024

Schedule of allowance for doubtful accounts

The change in the Company’s allowance for doubtful accounts was as follows (in thousands):

	Years Ended December 31,
	2020		2019		2018
Beginning balance	$	1,122	$	1,055	$	640
Additions		1,208		449		482
Write-offs, net of recoveries		(943)		(382)		(67)
Ending balance	$	1,387	$	1,122	$	1,055

Schedule of stock-based compensation

The following table summarizes stock-based compensation cost included in the consolidated statements of operations (in thousands):

	Years Ended December 31,
	2020		2019		2018
Cost of revenue, excluding depreciation and amortization	$	109	$	353	$	1,436
Sales and marketing		60		658		1,442
General and administrative		977		1,446		1,505
Research and development		43		356		637
	$	1,189	$	2,813	$	5,020