Equity Transactions - Underwritten Public Offering - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021
Class Of Stock [Line Items]
Proceeds from equity offering		$ 4,203	$ 4,253
Common Stock [Member]
Class Of Stock [Line Items]
Issuance of stock, shares	393,414	737,619	257,185

Number of new stock issued during the period.

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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration