XML 47 R38.htm IDEA: XBRL DOCUMENT
v3.23.1

Fair Value (Details) - Schedule of liabilities measured at fair value $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 USD ($)
Warrants: |
Balance as of December 31, 2021 | $ 4,200
Fair value adjustment of Private Placement Warrants | 2,800
Balance as of March 31, 2022 | $ 7,000

X
- Definition Amount of expense (income) related to adjustment to fair value of private placement warrants. + References No definition available. + Details
Name: | nn_FairValueAdjustmentOfPrivatePlacementWarrants
Namespace Prefix: | nn_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant