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Significant Accounting Policies - Summary of Reclassifications Consolidated Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities
Net cash provided by operating activities	$ 75,318	$ 47,136	$ 57,488
Cash Flows from Investing Activities
Net cash provided by/(used in) investing activities	(99,632)	10,641	(17,661)
Purchases of securities owned, at fair value	115,526	36,444	22,536
Proceeds from the sale of securities owned, at fair value	$ 19,441	18,703	11,880
Reclassification Of Net Cash Flow From Securities Purchases And Sales [Member]
Cash Flows from Operating Activities
Reclassification of net cash flows from securities purchases and sales		17,741	10,656
Previously Reported [Member]
Cash Flows from Operating Activities
Net cash provided by operating activities		29,395	46,832
Cash Flows from Investing Activities
Net cash provided by/(used in) investing activities		28,382	(7,005)
Adjustment [Member]
Cash Flows from Investing Activities
Purchases of securities owned, at fair value		(36,444)	(22,536)
Proceeds from the sale of securities owned, at fair value		18,703	11,880
As Corrected [Member]
Cash Flows from Operating Activities
Net cash provided by operating activities		47,136	57,488
Cash Flows from Investing Activities
Net cash provided by/(used in) investing activities		$ 10,641	$ (17,661)

X

- Definition

Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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