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Fair Value of Financial Instruments - Fair Vale of Cash and Cash Equivalents (Detail) - Level 1 - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total cash and cash equivalents	$ 27,781	$ 33,851
Cash
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total cash and cash equivalents	11,421	13,492
Money Market Funds
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Total cash and cash equivalents	$ 16,360	$ 20,359

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- Definition

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.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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