Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Subsequent Events - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Jul. 11, 2022	Jul. 08, 2022	Jul. 05, 2022	Mar. 25, 2021	Jun. 30, 2022
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues		1,575,000
Cash, cash equivalents and marketable securities					$ 54.4
Follow On Public Offering [Member]
Subsequent Event [Line Items]
Share Price			$ 2.10	$ 14.75
Stock Issued During Period, Shares, New Issues			12,000,000	2,033,899
Cash, cash equivalents and marketable securities					$ 26.8
Subsequent Event [Member]
Subsequent Event [Line Items]
Loans, maturity date	Mar. 01, 2024
Per share, less underwriting fees		$ 2.10
Prepayment of debt and fee	$ 43.9
Subsequent Event [Member] \| Mezzanine Lenders [Member]
Subsequent Event [Line Items]
Cash, cash equivalents and marketable securities	$ 40.0
Subsequent Event [Member] \| Follow On Public Offering [Member]
Subsequent Event [Line Items]
Share Price			$ 2.10
Stock Issued During Period, Shares, New Issues			12,000,000
Proceeds from issuance of debt		$ 26.8
Subsequent Event [Member] \| Over-Allotment Option [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, New Issues		1,575,000