Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Dec. 04, 2024	Dec. 02, 2024	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Sep. 30, 2024	Jul. 31, 2023	Sep. 30, 2022	Sep. 30, 2021
Class of Stock [Line Items]
Preferred stock, share outstanding			0	0	0
Reclassification adjustment for net gains included in net income			$ (267)	$ (52,013)	$ 79
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased							637,427
Additional Repurchase [Member] | 2021 Share Repurchase Program [Member]
Class of Stock [Line Items]
Repurchase of shares					1,000,000	1,000,000
Outstanding common stock at an average price paid per Share					$ 32.11	$ 32.11
Additional Repurchase [Member] | 2022 Share Repurchase Program [Member]
Class of Stock [Line Items]
Repurchase of shares				832,893	832,893
Outstanding common stock at an average price paid per Share				$ 27.89	$ 27.89
Additional Repurchase [Member] | 2023 Share Repurchase Program [Member]
Class of Stock [Line Items]
Repurchase of shares			362,573	362,573
Outstanding common stock at an average price paid per Share			$ 32.71	$ 32.71
Maximum [Member] | Additional Repurchase [Member]
Class of Stock [Line Items]
Number of shares authorized to be repurchased							10,000,000	1,000,000	1,000,000	1,000,000
Class A Common Stock [Member]
Class of Stock [Line Items]
Number of common stock shares authorized			45,000,000
Shares issued, par value			$ 0.01
Class A Common Stock [Member] | Private Offering [Member] | Underwriting Agreement [Member]
Class of Stock [Line Items]
Number of shares issued in transaction	2,067,240	1,797,600
Sale of stock, price per share		$ 44.5
Option to purchase number additional share		269,640
Underwriter discount price, per share		$ 27.44
Net proceeds received	$ 87,400
Class B Common Stock [Member]
Class of Stock [Line Items]
Number of common stock shares authorized			5,000,000
Shares issued, par value			$ 0.01