Unrestricted Net Assets - Condensed Financial Information on Cash Flows (Detail) - USD ($)	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023
Condensed Financial Information on Cash Flows [Line Items]
Cash from operating activities	$ 175,674	$ (1,062,973)
Cash used in investing activities	(326,829)	(7,593)
Cash from financing activities	(889,558)	58,058
Effect of exchange rates on cash	159,585	789,049
Net cash flows	(881,128)	(223,459)
Cash at beginning of year	1,105,214	251,100
Cash at end of period	224,086	27,641
Northann Corp [Member]
Condensed Financial Information on Cash Flows [Line Items]
Cash from operating activities	(251)	291
Cash used in investing activities	0	0
Cash from financing activities	0	0
Effect of exchange rates on cash	0	0
Net cash flows	(251)	290
Cash at beginning of year	370	224
Cash at end of period	$ 119	$ 514

Condensed financial information on cash flows.

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Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies. Excludes amounts for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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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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Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.

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