Capitalization - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands				12 Months Ended
	Dec. 03, 2021	Feb. 01, 2021	May 21, 2020	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Schedule of Capitalization, Equity [Line Items]
Adjustments to additional paid in capital, stock issued, issuance costs	$ 227	$ 198
Public Offering
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)	2,866,667	2,211,538	2,275,000
Shares issued, price per share (in usd per share)	$ 75.00	$ 65.00	$ 55.00
Proceeds from initial offering of shares	$ 201,900	$ 134,900	$ 117,200
Underwriting discounts and commissions	$ 12,900	$ 8,600	7,500
Adjustments to additional paid in capital, stock issued, issuance costs			$ 463
Over-Allotment Option
Schedule of Capitalization, Equity [Line Items]
Issuance of common stock (in shares)	200,000	288,461
Placement Shares | Stock Sale Agreement
Schedule of Capitalization, Equity [Line Items]
Adjustments to additional paid in capital, stock issued, issuance costs					$ 172
Aggregate offering price					$ 150,000
ATM Program
Schedule of Capitalization, Equity [Line Items]
Proceeds from initial offering of shares				$ 16,900
Underwriting discounts and commissions				$ 524
Number of shares issued in transaction				262,500
Sale of stock, price per share (in usd per share)						$ 66.50
Remaining available issuance amount				$ 132,500