XML 21 R11.htm IDEA: XBRL DOCUMENT
v3.22.2

Statements of Consolidated Equity (Shares) - shares shares in Thousands | Total | Preferred Stock | Common Stock | Treasury Stock
--- | --- | --- | --- | ---
Beginning balance at Dec. 31, 2020 | 391,760 | 440 | 395,723 | (3,963)
Issued: |  |  |  |
Equity Units | 0 | 863 | 0 | 0
Employee stock purchase plan | 107 | 0 | 107 | 0
Long-term incentive plan | 263 | 0 | 263 | 0
401(k) and profit sharing | 199 | 0 | 199 | 0
Ending balance at Jun. 30, 2021 | 392,329 | 1,303 | 396,292 | (3,963)
Beginning balance at Mar. 31, 2021 | 392,130 | 440 | 396,093 | (3,963)
Issued: |  |  |  |
Equity Units | 0 | 863 | 0 | 0
Employee stock purchase plan | 52 | 0 | 52 | 0
Long-term incentive plan | 51 | 0 | 51 | 0
401(k) and profit sharing | 96 | 0 | 96 | 0
Ending balance at Jun. 30, 2021 | 392,329 | 1,303 | 396,292 | (3,963)
Beginning balance at Dec. 31, 2021 | 405,303 | 1,303 | 409,266 | (3,963)
Issued: |  |  |  |
Employee stock purchase plan | 83 | 0 | 83 | 0
Long-term incentive plan | 328 | 0 | 328 | 0
401(k) and profit sharing | 164 | 0 | 164 | 0
Ending balance at Jun. 30, 2022 | 405,878 | 1,303 | 409,841 | (3,963)
Beginning balance at Mar. 31, 2022 | 405,734 | 1,303 | 409,697 | (3,963)
Issued: |  |  |  |
Employee stock purchase plan | 39 | 0 | 39 | 0
Long-term incentive plan | 28 | 0 | 28 | 0
401(k) and profit sharing | 77 | 0 | 77 | 0
Ending balance at Jun. 30, 2022 | 405,878 | 1,303 | 409,841 | (3,963)

X
- Definition Stock issued during period shares. + References No definition available. + Details
Name: | nix_StockIssuedDuringPeriodSharesAbstract
Namespace Prefix: | nix_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock Issued During the Period, Shares, Equity Units + References No definition available. + Details
Name: | nix_StockIssuedDuringThePeriodSharesEquityUnits
Namespace Prefix: | nix_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 + Details
Name: | us-gaap_SharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued during the period to an employee benefit plan, such as a defined contribution or defined benefit plan. + References No definition available. + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesEmployeeBenefitPlan
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued during the period as a result of an employee stock purchase plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: 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 4: 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(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 3: 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 4: 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(29)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration