XML 32 R21.htm IDEA: XBRL DOCUMENT
v3.25.3

Commitments and Contingencies (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2025
Idaho Power Company |
Commitment and Contingencies |
Schedule of movements in deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Nine months ended September 30,
​ | ​ | 2025 |  | 2024
Balance at beginning of period | ​ | $ | — | ​ | $ | —
Deposits | ​ |  | 18,759,381 | ​ |  | —
Costs incurred - expense | ​ |  | (10,309,237) | ​ |  | —
Balance at end of period | ​ | $ | 8,450,144 | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​
Current portion | ​ | $ | 8,450,144 | ​ | $ | —
Non-current portion | ​ |  | — | ​ |  | —
Balance at end of period | ​ | $ | 8,450,144 | ​ | $ | —
ATCO Structures & Logistics (USA) Inc. |
Commitment and Contingencies |
Schedule of movements in deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024
Balance at beginning of period | ​ | $ | — | ​ | $ | —
Deposits | ​ |  | 13,350,000 | ​ |  | —
Costs incurred – expense | ​ |  | (244,663) | ​ |  | —
Costs incurred – asset | ​ |  | — | ​ |  | —
Balance at end of period | ​ | $ | 13,105,337 | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​
Current portion | ​ | $ | — | ​ | $ | —
Non-current portion | ​ |  | 13,105,337 | ​ |  | —
Balance at end of period | ​ | $ | 13,105,337 | ​ | $ | —
Vendor agreement |
Commitment and Contingencies |
Schedule of movements in deposits | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30,
​ |  | 2025 |  | 2024
Balance at beginning of period | ​ | $ | — | ​ | $ | —
Deposits | ​ |  | 2,153,439 | ​ |  | —
Costs incurred – expense | ​ |  | — | ​ |  | —
Costs incurred – asset | ​ |  | — | ​ |  | —
Balance at end of period | ​ | $ | 2,153,439 | ​ | $ | —
​ | ​ | ​ | ​ | ​ | ​ | ​
Current portion | ​ | $ | 2,153,439 | ​ | $ | —
Non-current portion | ​ |  | — | ​ |  | —
Balance at end of period | ​ | $ | 2,153,439 | ​ | $ | —

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | ppta_CommitmentAndContingenciesLineItems
Namespace Prefix: | ppta_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of deposit assets which includes a roll forward schedule. + References No definition available. + Details
Name: | ppta_ScheduleOfDepositsAssetsTableTextBlock
Namespace Prefix: | ppta_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_CounterpartyNameAxis=ppta_IdahoPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CounterpartyNameAxis=ppta_AtcoStructuresAndLogisticsUsaInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_TypeOfArrangementAxis=ppta_VendorAgreementOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |