Stockholders' Equity (Details) - USD ($) $ in Thousands					3 Months Ended
	Aug. 18, 2021	Feb. 18, 2021	Feb. 16, 2021	Jul. 13, 2020	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Shareholders Equity [Line Items]
Net proceeds from sale of common stock		$ 12,200				$ 14,453
Stockholders' Equity total amount					$ 22,315	$ 31,373	$ 25,457	$ 15,070
Common Stock, shares issued					7,160,000		7,160,000
Common Stock, shares outstanding					7,160,000		7,160,000
Preferred Stock, shares issued					0		0
Preferred Stock, shares outstanding					0		0
Common Stock
Shareholders Equity [Line Items]
Shares issued (in shares)						1,989,000
Stockholders' Equity total amount					$ 7	$ 7	$ 7	$ 5
IPO [Member]
Shareholders Equity [Line Items]
Shares issued (in shares)			1,710,600
Net proceeds from sale of common stock			$ 13,000
2021 Public Offering [Member]
Shareholders Equity [Line Items]
Shares issued (in shares)			1,650,000
At-The-Market Offering Agreement [Member]
Shareholders Equity [Line Items]
Public float					75,000
Maximum aggregate offering price	$ 10,000			$ 7,000
Stockholders' Equity total amount					$ 22,300		$ 25,500
At-The-Market Offering Agreement [Member] | Common Stock
Shareholders Equity [Line Items]
Common Stock, shares issued					7,160,164
Common Stock, shares outstanding					7,160,164
At-The-Market Offering Agreement [Member] | Preferred Stock
Shareholders Equity [Line Items]
Preferred Stock, shares issued					0
Preferred Stock, shares outstanding					0