FINANCIAL STATEMENT DETAILS (Tables)

12 Months Ended

Dec. 31, 2021

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Cash and Cash Equivalents

The reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheet to the total amounts shown in the consolidated statement of cash flows is as follows:

	December 31, 2021		December 31, 2020		December 31, 2019		December 31, 2018
	(In thousands)
Cash and cash equivalents	$	321,900	$	110,011	$	1,939	$	985
Restricted cash included in other current assets	445		26		24		23
Total cash and cash equivalents and restricted cash as shown on the consolidated statement of cash flows	$	322,345	$	110,037	$	1,963	$	1,008

Schedule of Restricted Cash

The reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheet to the total amounts shown in the consolidated statement of cash flows is as follows:

	December 31, 2021		December 31, 2020		December 31, 2019		December 31, 2018
	(In thousands)
Cash and cash equivalents	$	321,900	$	110,011	$	1,939	$	985
Restricted cash included in other current assets	445		26		24		23
Total cash and cash equivalents and restricted cash as shown on the consolidated statement of cash flows	$	322,345	$	110,037	$	1,963	$	1,008

Schedule of Prepaid Expenses and Other Current Assets

	December 31,
	2021		2020
	(In thousands)
Prepaid expenses	$	11,377	$	4,027
Other current assets	7,434		3,905
Prepaid expenses and other current assets	$	18,811	$	7,932

Schedule of Accrued Expenses and Other Current Liabilities

	December 31,
	2021		2020
	(In thousands)
Accrued employee compensation and benefits	$	23,082	$	18,881
Due to IAC (a)	12,554		—
Other accrued expenses and current liabilities	31,749		28,551
Accrued expenses and other current liabilities	$	67,385	$	47,432

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(a)    As of December 31, 2021, includes $6.1 million related to the operating lease agreements as described in "Note 14—Related Party Transactions."

Schedule of Other (Expense) Income, Net

	Years Ended December 31,
	2021		2020		2019
	(In thousands)
Other income (expense), net	$	10,241	$	93	$	(6,441)

Schedule of Supplemental Disclosure of Cash Flow Information

	Years Ended December 31,
	2021		2020		2019
	(In thousands)
Cash paid (received) during the year for:
Interest	$	5,064	$	10,653	$	6,529
Income tax payments	$	801	$	957	103
Income tax refunds	$	(62)	$	(70)	—

Schedule of Revenue and Long-lived Assets by Geographic Area

Geographic information about revenue and long-lived assets is presented below.

Revenue by geography is based on where the customer is located. The United States is the only country whose revenue is greater than 10 percent of total revenue of the Company for the years ended December 31, 2021, 2020, and 2019.

	Years Ended December 31,
	2021		2020		2019
	(In thousands)
Revenue:
United States	$	197,576	$	139,826	$	100,275
All other countries	194,102		143,392		95,740
Total	$	391,678	$	283,218	$	196,015

Long-lived assets, excluding goodwill, intangible assets with definite lives and ROU assets, at December 31, 2021 and December 31, 2020 relate to "Leasehold improvements and equipment, net."

	December 31,
	2021		2020
	(In thousands)
Leasehold improvements and equipment, net:
United States	$	1,901	$	2,549
All other countries	967		772
Total	$	2,868	$	3,321