Prepaids and Other Assets (Details 1) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Prepaids and Other Assets
Advance payments to BEA	$ 1.8	$ 1.1
Prepaid project development costs	0.1	0.0
Other	0.1	0.0
Prepaid project costs and other long-term assets	$ 2.0	$ 1.1

Carrying amount as of the balance sheet date of amounts paid in advance which will be charged against earnings in periods after one year or beyond the operating cycle, if longer.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(17))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

Name:	us-gaap_PrepaidExpenseOtherNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant