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Consolidated Statements of Cash Flows - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Cash flows from (used in) from operating activities |  |
Net income (loss) for the year: | $ (77,559) | $ 70,168
Adjust for: |  |
Depreciation (Note 6) | 2,252 | 1,804
Share-based payments (Note 11) | 29,534 | 37,142
Mark-to-market (gain) loss on convertible debenture (Note 9) | (18,375) | 48,745
Interest expense on convertible debentures (Note 9) | 32,497 | 6,098
Interest on lease liabilities (Note 10(c)) | 110 | 153
Share of net (income) loss from associate (Note 7) | 13,798 | (920)
Loss on dilution of ownership interest in associate (Note 7) | 113 | 0
Deferred income tax recovery (Note 18) | (4,567) | (1,412)
Unrealized foreign exchange loss | 4,040 | 964
Other expense | 159 | 1,378
Gain on loss of control of IsoEnergy (Note 16) | 0 | (204,038)
Operating cash flows before working capital | (17,998) | (39,918)
Changes in working capital items: |  |
Amounts receivable | 127 | (132)
Prepaid expenses and other | (6,028) | (13,893)
Accounts payable and accrued liabilities | (188) | 1,332
Deposits | 0 | (5)
Cash used in operating activities | (24,087) | (52,616)
Cash flows used in investing activities |  |
Expenditures on exploration and evaluation assets (Note 5) | (128,322) | (109,741)
Disposal of cash due to deconsolidation of IsoEnergy (Note 16) | 0 | (42,329)
Acquisition of marketable securities | 0 | (2,000)
Acquisition of property and equipment (Note 6) | (2,361) | (6,066)
Cash used in investing activities | (130,683) | (160,136)
Cash provided by financing activities |  |
Proceeds from at-the-market equity program, net of issuance costs (Note 11) | 130,237 | 175,858
Proceeds from ASX CDI offering, net of issuance costs (Note 11) | 215,780 | 0
Issuance of convertible debentures, net of issuance costs (Note 9) | 0 | 147,955
Proceeds from exercise of options | 20,160 | 27,609
Payment of lease liabilities (Note 10(c)) | (1,035) | (928)
Interest paid on convertible debentures | (20,502) | (3,209)
Shares issued from IsoEnergy Ltd. for cash from private placements, net of share issuance costs | 0 | 21,605
Cash provided by financing activities | 344,640 | 368,890
Effect of exchange rate fluctuations on cash | (4,026) | 158
Increase in cash | 185,844 | 156,296
Cash, beginning of year | 290,743 | 134,447
Cash, end of year | $ 476,587 | $ 290,743

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- Definition Other non operating expense. + References No definition available. + Details
Name: | nxe_OtherNonOperatingExpense
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from asx cdi offering net of issuance costs. + References No definition available. + Details
Name: | nxe_ProceedsFromAsxCdiOfferingNetOfIssuanceCosts
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Proceeds from at the market program net of share issuance costs. + References No definition available. + Details
Name: | nxe_ProceedsFromAtTheMarketProgramNetOfShareIssuanceCosts
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Cash from exercise of options and warrants, net of share issuance costs + References No definition available. + Details
Name: | nxe_ProceedsFromExerciseOfOptionsAndWarrants
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Purchase of marketable securities classified as investing activities. + References No definition available. + Details
Name: | nxe_PurchaseOfMarketableSecuritiesClassifiedAsInvestingActivities
Namespace Prefix: | nxe_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration