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Fair Value Measurements - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Cash and cash equivalents	$ 125,407	$ 138,685	$ 72,606
Short-term restricted cash	0		279
Long-term restricted cash	1,379	1,379	1,379
Total cash, cash equivalents, and restricted cash shown in the consolidated statement of cash flows	$ 126,786	$ 140,064	$ 74,264	$ 91,551

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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