Unrestricted Net Assets - Condensed Financial Information on Cash Flows (Detail) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Condensed Financial Information on Cash Flows [Line Items]
Cash used in operating activities	$ (4,678,716)	$ (3,430,412)
Cash used in investing activities	0	(150,607)
Cash provided by financing activities	5,376,489	2,560,629
Net cash flows	850,279	(497,714)
Cash and restricted cash at beginning of year	254,935	748,814
Cash and restricted cash at end of year	1,105,214	254,935
Northann Corp [Member]
Condensed Financial Information on Cash Flows [Line Items]
Cash used in operating activities	(5,965,604)	(5,026)
Cash used in investing activities	0	(926,828)
Cash provided by financing activities	5,965,750	932,078
Net cash flows	146	224
Cash and restricted cash at beginning of year	224	0
Cash and restricted cash at end of year	$ 370	$ 224

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.

+ References

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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 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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