Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - Recurring Basis - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets:
Assets	$ 26,501	$ 81,601
Money Market Funds
Assets:
Cash equivalents	26,501	81,601
Not Subject to Netting
Assets:
Assets	26,501	81,601
Not Subject to Netting \| Money Market Funds
Assets:
Cash equivalents	$ 26,501	$ 81,601

Fair value portion 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.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant