XML 84 R60.htm IDEA: XBRL DOCUMENT
v3.21.2

Investment Held in Trust Account (Details) - Spartacus Acquisition Corp [Member] - USD ($) | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
U.S. Money Market [Member] |  |
Investment Held in Trust Account (Details) [Line Items] |  |
Investments in trust account | $ 203,007,413 |
Assets Held-in-trust, Noncurrent |  | $ 5,071
U.S. Treasury Securities [Member] |  |
Investment Held in Trust Account (Details) [Line Items] |  |
Assets Held-in-trust, Noncurrent |  | $ 203,023,911

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

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

X
- Definition The amount of cash, securities, or other assets held by a third-party trustee pursuant to the terms of an agreement which assets are available to be used by beneficiaries to that agreement only within the specific terms thereof and which agreement is expected to terminate more than one year from the balance sheet date (or operating cycle, if longer) at which time the assets held-in-trust will be released or forfeited. + 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_AssetsHeldInTrustNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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: |