XML 59 R49.htm IDEA: XBRL DOCUMENT
v3.22.2

Equity (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Dec. 31, 2021 | Apr. 19, 2021
Preferred Stock, Shares Authorized | 20,000,000 |  | 20,000,000 | 20,000,000 |
Preferred Stock, Shares Outstanding | 1,302,500 |  | 1,302,500 | 1,302,500 |
Preferred Stock, Par or Stated Value Per Share | $ 0.01 |  | $ 0.01 | $ 0.01 |
Series A Corporate Units |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  | $ 100
Shares To Be Issued Under Stock Purchase Contracts |  |  | 35,200,000 |  |
Series C Preferred Stock |  |  |  |  |
Shares To Be Issued Under Stock Purchase Contracts |  |  | 35,200,000 |  |
Series A Corporate Units |  |  |  |  |
Shares Issued, Price Per Share |  |  |  |  | 100
At The Market Program |  |  |  |  |
Common Stock Aggregate Sale Price |  |  | $ 750.0 |  |
ATM Program Equity Remaining Available for Issuance |  |  | 300.0 |  |
Forward August 21 Member |  |  |  |  |
Forward Contract Indexed to Issuer's Equity, Shares | 5,941,598 |  |  |  |
Forward Contract Indexed to Issuer's Equity, Forward Rate Per Share | $ 25.25 |  |  |  |
Forward Contract Indexed to Issuer's Equity, Settlement Alternatives, Shares, at Fair Value | $ 143.8 |  | $ 143.8 |  |
Forward Contract Indexed to Issuers Equity, Forward Rate Per Share, at Fair Value |  |  | $ 24.20 |  |
Series A Preferred Stock |  |  |  |  |
Preferred Stock, Shares Outstanding | 400,000 |  | 400,000 |  |
Preferred Stock, Amount of Preferred Dividends in Arrears | $ 1.0 | $ 1.0 |  |  |
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears | $ 2.51 | $ 2.51 |  |  |
Series B Preferred Stock |  |  |  |  |
Preferred Stock, Shares Outstanding | 20,000 |  | 20,000 |  |
Preferred Stock, Amount of Preferred Dividends in Arrears | $ 1.4 | $ 1.4 |  |  |
Preferred Stock, Per Share Amounts of Preferred Dividends in Arrears | $ 72.23 | $ 72.23 |  |  |
Series B-1 Preferred Stock |  |  |  |  |
Preferred Stock, Shares Outstanding | 20,000 |  | 20,000 |  |
Series C Preferred Stock |  |  |  |  |
Preferred Stock, Shares Outstanding | 862,500 |  | 862,500 |  |
Preferred Stock, Par or Stated Value Per Share |  |  |  |  | $ 0.01
Undivided Beneficial Ownership Interest, Percent |  |  |  |  | 10.00%

X
- Definition ATM Program Equity Remaining Available for Issuance + References No definition available. + Details
Name: | nix_ATMProgramEquityRemainingAvailableforIssuance
Namespace Prefix: | nix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Common Stock Aggregate Sale Price + References No definition available. + Details
Name: | nix_CommonStockAggregateSalePrice
Namespace Prefix: | nix_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Forward Contract Indexed to Issuers Equity, Forward Rate Per Share, at Fair Value + References No definition available. + Details
Name: | nix_ForwardContractIndexedToIssuersEquityForwardRatePerShareAtFairValue
Namespace Prefix: | nix_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Shares To Be Issued Under Stock Purchase Contracts + References No definition available. + Details
Name: | nix_SharesToBeIssuedUnderStockPurchaseContracts
Namespace Prefix: | nix_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Undivided Beneficial Ownership Interest, Percent + References No definition available. + Details
Name: | nix_UndividedBeneficialOwnershipInterestPercent
Namespace Prefix: | nix_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The per share price of the Company's stock at which the contract holder of the freestanding contract has the right to purchase or sell the Company's stock at a future date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=126731327&loc=d3e90205-114008 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(1) -URI https://asc.fasb.org/extlink&oid=109262807&loc=d3e22047-110879 + Details
Name: | us-gaap_ForwardContractIndexedToIssuersEquityForwardRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount that would be paid upon settlement of forward contract indexed to equity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=126731327&loc=d3e90205-114008 + Details
Name: | us-gaap_ForwardContractIndexedToIssuersEquitySettlementAlternativesCashAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The maximum number of shares that could be issued to net share settle a contract, if applicable. If a contract does not have a fixed or determinable maximum number of shares that may be required to be issued, disclose the fact that a potentially infinite number of shares could be issued to settle the contract. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 40 -Section 50 -Paragraph 5 -Subparagraph (b)(2) -URI https://asc.fasb.org/extlink&oid=126731327&loc=d3e90205-114008 + Details
Name: | us-gaap_ForwardContractIndexedToIssuersEquityShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate amount of cumulative preferred dividends in arrears. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21488-112644 + Details
Name: | us-gaap_PreferredStockAmountOfPreferredDividendsInArrears
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126973232&loc=SL123496158-112644 + Details
Name: | us-gaap_PreferredStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Per share amount of cumulative preferred dividends in arrears. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21488-112644 + Details
Name: | us-gaap_PreferredStockPerShareAmountsOfPreferredDividendsInArrears
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_PreferredStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_CapitalUnitsByClassAxis=nix_SeriesACorporateUnits
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalUnitsByClassAxis=us-gaap_SeriesCPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CapitalUnitsByClassAxis=nix_SeriesACorporateUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=nix_AtTheMarketProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=nix_ForwardAugust21MemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesAPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesBPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=nix_SeriesB1PreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_SeriesCPreferredStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |