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Stockholders' Equity - At-the-Market Offering - Additional Information (Details) - USD ($)		12 Months Ended
	Aug. 18, 2020	Dec. 31, 2021	Dec. 31, 2020
Stockholders Equity Note [Line Items]
Gross proceeds from issuance of common stock		$ 2,458,000
Issuance costs			$ 1,000
Cantor Fitzgerald & Co [Member]
Stockholders Equity Note [Line Items]
Percentage of commission on aggregate gross proceeds	3.00%
Cantor Fitzgerald & Co [Member] | At-the-Market Offering [Member]
Stockholders Equity Note [Line Items]
Shares issued in public offering		77,644
Gross proceeds from issuance of common stock		$ 910,000
Issuance costs		$ 121,000
Roth Capital Partners L L C
Stockholders Equity Note [Line Items]
Percentage of fee on gross sale price per share	1.05%
Percentage of underwriting fee to be received on company offerings	35.00%
Common stock offering period	90 days
Maximum [Member] | Cantor Fitzgerald & Co [Member]
Stockholders Equity Note [Line Items]
At-the-market offering, aggregate offering price	$ 10,000,000
Legal fees and disbursements	$ 50,000.0

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