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Summary of significant accounting policies (Tables)

6 Months Ended

Jun. 30, 2025

Accounting Policies [Abstract]

Reconciliation of cash

​

​	​	​	​	​	​	​
​		End of			Beginning of
​		period-			period-
​		June 30,			December 31,
​		2025		​	2024
Cash and cash equivalents	​	$	1,017,386	​	$	779,709
Restricted cash included in deposits and other assets	​		15,683	​		15,607
Total Cash, cash equivalents and restricted cash per consolidated statement of cash flows	​	$	1,033,069	​	$	795,316

Schedule of Inventory

​

​	​	​	​	​	​	​
​		June 30, 2025			December 31, 2024
Raw materials	​	$	2,189	​	$	2,538
Work in progress	​		24,365	​		12,216
Finished goods	​		7,507	​		8,440
Total inventory	​	$	34,061	​	$	23,194

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- Definition

Tabular disclosure of the carrying amount as of the balance sheet date of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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-Topic 210
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-Name Accounting Standards Codification
-Section S99
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Tabular disclosure of cash and cash equivalents restricted as to withdrawal or usage.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
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-Section S99
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