SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Deferred revenue (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2026	Dec. 31, 2025	Dec. 31, 2024
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Balance, beginning of year	$ 348,538	$ 129,140	$ 281,403
Billings in advance of revenue recognition	1,325,425	376,981	26,169
Revenue recognized from beginning balance	(1,387,274)	(157,583)	(178,432)
Balance, end of year	$ 286,689	$ 348,538	$ 129,140

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 210
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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-Topic 606
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-Topic 606
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-Topic 606
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