XML 125 R51.htm IDEA: XBRL DOCUMENT
v3.22.2.2

Equity (Details 2) - $ / shares |  |  | 1 Months Ended
--- | --- | --- | ---
Mar. 15, 2021 | Feb. 11, 2021 | Oct. 31, 2021 | Oct. 20, 2021 | Mar. 31, 2021 | Feb. 28, 2021
Consolidated Balance Sheets |  |  |  |  |  |
Fair value options | 9,860 | 604,572 |  | 473,143 |  |
Options issued | 3,572 | 283,936 | 182,166 | 182,143 | 3,572 | 283,936
Exercise price | $ 5.60 | $ 5.60 | $ 5.60 | $ 5.60 | $ 5.60 | $ 5.60
Expected term (in years) | 3.0 | 3.0 | 3 | 3.0 | 3 | 3 years
Risk-free rate | 0.33% | 0.19% |  | 0.70% |  |
Expected volatility | 99.30% | 97.90% |  | 96.60% |  |

X
- References No definition available. + Details
Name: | njmc_ExercisePricePerShare
Namespace Prefix: | njmc_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | njmc_ExpectedTerms
Namespace Prefix: | njmc_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | njmc_ExpectedVolatility
Namespace Prefix: | njmc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | njmc_FairValueOptions
Namespace Prefix: | njmc_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | njmc_RiskFreeRate
Namespace Prefix: | njmc_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration