Amounts Receivable and Prepaids (Narrative) (Details) $ in Millions	3 Months Ended
Jun. 30, 2025 CAD ($)	Jun. 30, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)
Receivables [Abstract]
Provision for uncertainty of collection	$ 0.3	$ 0.3	$ 0.3
Provisions on sales tax payable				$ 2.3
Sales Tax Received		1.4
Additional Paid Assessment		$ 0.2

Amount of expense related to credit loss from transactions other than loan and lease transactions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (a)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Name:	us-gaap_ProvisionForOtherCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration