XML 71 R60.htm IDEA: XBRL DOCUMENT
v3.23.1

Share-based Compensation (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 01, 2022 | Aug. 01, 2022 | Jan. 01, 2022 | Sep. 09, 2021 | Mar. 08, 2021 | Jan. 15, 2021 | Aug. 28, 2019 | Aug. 31, 2022 | Jan. 31, 2022 | Dec. 31, 2022 | Dec. 31, 2021 | Nov. 30, 2022 | May 03, 2021 | May 26, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares awarded |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock reserved for issuance |  |  |  |  |  |  |  |  |  | 571,429 |  |  |  |  |
Number of options, granted |  |  |  |  |  |  |  |  |  | 609,687 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Exercised |  |  |  |  |  |  |  |  |  | 5,682 |  | 39,524 |  |  |
Restricted stock award shares, granted |  |  |  |  |  |  |  |  |  | 96,114 |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  |  |  |  |  | 84,750 |  | 90,432 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercises in Period, Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  | $ 1.82 |  | $ 4.40 |  | $ 2.10 |  |  |
Share-based Payment Arrangement, Expense |  |  |  |  |  |  |  |  |  | $ 89 |  | $ 285 |  |  |
Unrecognized Share-based Payment Arrangement, Expense |  |  |  |  |  |  |  |  |  | 116 |  |  |  |  |
Intrinsic value of vested outstanding warrants |  |  |  |  |  |  |  |  |  | $ 114 |  | $ 372 |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  |  |  |  |  | $ 4.40 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value |  |  |  |  |  |  |  |  | $ 50 |  |  |  |  |  |
Officers and Employees [Member | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock award shares, granted |  | 84,750 |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  | 84,750 |  |  |  |  |  |  |  |  |  |  |  |  |
Share Price |  | $ 1.82 |  |  |  |  |  |  |  |  |  |  |  |  |
Chief Executive Officer [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock award shares, granted |  |  | 11,364 |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  | 11,364 |  |  |  |  |  |  |  |  |  |  |  |
Share Price |  |  | $ 4.40 |  |  |  |  |  |  |  |  |  |  |  |
Chief Executive Officer and Chief Financial Officer [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock award shares, granted |  |  |  |  | 39,524 |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, Restricted Stock Award, Gross |  |  |  |  | 39,524 |  |  |  |  |  |  |  |  |  |
Share Price |  |  |  |  | $ 2.10 |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares awarded |  |  |  |  |  |  | 57,143 |  |  |  | [1] |  |  |  |
Common stock reserved for issuance |  |  |  |  |  |  |  |  |  | 571,429 | [1] |  |  |  | 57,143
Number of options, granted |  |  |  |  |  |  |  |  |  | 564,246 | [1] |  |  |  | 485,715
Common stock reserved for issuance |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  | 485,715 |
Number of shares available for grant |  |  |  |  |  |  |  |  |  |  |  |  |  | 571,429 |
[custom:ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsNumberExercised] |  |  |  |  |  |  |  |  |  | 871,429 |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Exercised |  |  |  |  |  |  |  |  |  | 609,687 |  |  |  |  |
2019 Plan [Member] | Equity Option [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  |  |  |  |  |  | $ 3.3461538 |  | $ 3.960526 |  |  |
Intrinsic value |  |  |  |  |  |  |  |  |  | $ 124 |  | $ 408 |  |  |
Unrecognized share-based compensation expense |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
2019 Plan [Member] | Equity Option [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of recognition of stock based compensation expense |  |  |  |  |  |  |  |  |  | 36 months |  |  |  |  |
2019 Plan [Member] | Equity Option [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of recognition of stock based compensation expense |  |  |  |  |  |  |  |  |  | 18 months |  |  |  |  |
2019 Plan [Member] | Executive Officer [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  |  |  | 14,286 |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Neil Chesen [Member] | Option One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | 65,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | $ 2.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, vested | 15,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, expected to vest | 50,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Neil Chesen [Member] | Option Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | $ 2.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Neil Chesen [Member] | Option Three [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | 37,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | $ 5.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Neil Chesen [Member] | Option Three [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration period | 36 months |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Leonard Nelson [Member] | Option One [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | 30,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | $ 2.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, vested | 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, expected to vest | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration period | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Leonard Nelson [Member] | Option One [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration period | 18 months |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Leonard Nelson [Member] | Option Two [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | 37,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted | $ 5.50 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration period | 10 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Dr.Leonard Nelson [Member] | Option Two [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expiration period | 36 months |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Contractor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  |  | 14,286 |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  |  | $ 2.80 |  |  |  |  |  |  |  |  |
Number of options, vested |  |  |  |  |  | 2,857 |  |  |  |  |  |  |  |  |
Number of options, expected to vest |  |  |  |  |  |  |  |  |  |  |  |  | 11,429 |  |
2019 Plan [Member] | Dr.Jerome Zeldis [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  | 19,048 |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  | $ 2.80 |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Steven Glassman [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  | 14,286 |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  |  | $ 2.80 |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Adam Levy [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  | 14,286 |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  | $ 5.25 |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | Yaakov Spinrad [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  | 14,286 |  |  |  |  |  |  |  |  |  |  |
2019 Plan [Member] | MirandaJ Toledano [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of options, granted |  |  |  | 14,286 |  |  |  |  |  |  |  |  |  |  |
[1] | includes incentive stock options and restricted stock units discussed below.

X
- Definition Intrinsic value of vested outstanding warrants. + References No definition available. + Details
Name: | NXGL_ClassOfWarrantOrRightOutstandingIntrinsicValue
Namespace Prefix: | NXGL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Convertible Common Stock Reserved For Future Issuance. + References No definition available. + Details
Name: | NXGL_ConvertibleCommonStockReservedForFutureIssuance
Namespace Prefix: | NXGL_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share based compensation arrangement by share based payment award equity instruments other than options exercises in period weighted average grant date fair value. + References No definition available. + Details
Name: | NXGL_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisesInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix: | NXGL_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Unrecognized share based compensation expense. + References No definition available. + Details
Name: | NXGL_UnrecognizedShareBasedCompensationExpense
Namespace Prefix: | NXGL_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_AllocatedShareBasedCompensationExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Aggregate number of common shares reserved for future issuance. + 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 210.5-02.29) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockCapitalSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate number of nonredeemable convertible preferred shares reserved for future issuance. + 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_ConvertiblePreferredStockSharesReservedForFutureIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of cost to be recognized for option under share-based payment arrangement. + 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 (i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-option equity instruments exercised by participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsExercised
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of fully vested and expected to vest options outstanding that can be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -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_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards. + 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 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_OfficersAndEmployeesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ChiefExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_ChiefExecutiveOfficerAndChiefFinancialOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=NXGL_TwoThousandAndNineteenLongTermIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_StockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=srt_ExecutiveOfficerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_Dr.NeilChesenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=NXGL_OptionOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=NXGL_OptionTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=NXGL_OptionThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_Dr.LeonardNelsonMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_ContractorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_Dr.JeromeZeldisMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_StevenGlassmanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_AdamLevyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_YaakovSpinradMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_TitleOfIndividualAxis=NXGL_MirandaJToledanoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |