XML 85 R61.htm IDEA: XBRL DOCUMENT
v3.21.2

Investment Held in Trust Account (Details) - Schedule of fair value held to maturities - Spartacus Acquisition Corp [Member] - USD ($) | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Marketable Securities [Line Items] |  |
Carrying Value/Amortized Cost | $ 203,007,413 | $ 203,028,982
Gross Unrealized Gains |  | 6,784
Gross Unrealized Losses |  |
Total | 203,007,413 | 203,035,766
U.S. Money Market [Member] |  |
Marketable Securities [Line Items] |  |
Carrying Value/Amortized Cost | 203,007,413 | 5,071
Gross Unrealized Gains |  |
Gross Unrealized Losses |  |
Total | 203,007,413 | 5,071
U.S. Treasury Securities [Member] |  |
Marketable Securities [Line Items] |  |
Carrying Value/Amortized Cost |  | 203,023,911
Gross Unrealized Gains |  | 6,784
Gross Unrealized Losses |  |
Total |  | $ 203,030,695

X
- References No definition available. + Details
Name: | nn_CarryingValueAmortizedCost
Namespace Prefix: | nn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | nn_GrossUnrealizedGains
Namespace Prefix: | nn_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | nn_GrossUnrealizedLosses
Namespace Prefix: | nn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(b)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
Name: | us-gaap_AssetsHeldInTrust
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Details
Name: | srt_ConsolidatedEntitiesAxis=nn_SpartacusAcquisitionCorpMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_MoneyMarketFundsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAxis=us-gaap_USTreasurySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |