Stockholders' Equity - Common Stock - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Nov. 30, 2017
Sale Of Common Stock [Line Items]
Common stock, shares issued	3,343,070			3,343,070
Common stock, value of shares issuable						$ 16,000,000.0
Proceeds from issuance of common stock from ATM		$ 175,069
Options Granted [Member]
Sale Of Common Stock [Line Items]
Number of stock options granted	77,500	37,499
FBR Sales Agreement [Member]
Sale Of Common Stock [Line Items]
Common stock, shares issued					0
ATM Sales Agreement [Member]
Sale Of Common Stock [Line Items]
Common stock, shares issued	0	21,783
Proceeds from issuance of common stock		$ 172,000
Common stock , weighted average price per share		$ 8.04
ATM Sales Agreement [Member] | Maximum [Member]
Sale Of Common Stock [Line Items]
Potential proceeds from issuance of common stock, net			$ 30,000,000