XML 45 R35.htm IDEA: XBRL DOCUMENT
v3.24.3

Intangibles (Details) - Schedule of Intangible assets - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Intangible Assets and Goodwill [Line Items] |  |
Gross Amount | $ 14,438 | $ 13,917
Accumulated Amortization | 4,259 | 3,292
Net Carrying Value | 10,179 | 10,625
Indefinite-Lived Intangible Assets [Member] |  |
Intangible Assets and Goodwill [Line Items] |  |
Gross Amount | 3,467 | 3,467
Accumulated Amortization |  |
Net Carrying Value | 3,467 | 3,467
Acquired Software [Member] |  |
Intangible Assets and Goodwill [Line Items] |  |
Gross Amount | 7,293 | 7,217
Accumulated Amortization | 2,438 | 2,050
Net Carrying Value | 4,855 | 5,167
Acquired Technology [Member] |  |
Intangible Assets and Goodwill [Line Items] |  |
Gross Amount | 606 | 599
Accumulated Amortization | 97 | 58
Net Carrying Value | 509 | 541
Internal Use Software [Member] |  |
Intangible Assets and Goodwill [Line Items] |  |
Gross Amount | 3,072 | 2,634
Accumulated Amortization | 1,724 | 1,184
Net Carrying Value | $ 1,348 | $ 1,450

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

X
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482640/350-30-55-40 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480265/350-10-S45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(15)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_IntangibleAssetsGrossExcludingGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482665/350-30-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482686/350-30-45-1 + Details
Name: | us-gaap_IntangibleAssetsNetExcludingGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | nn_IntangibleAssetsAndGoodwillByTypeAxis=us-gaap_IndefinitelivedIntangibleAssetsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nn_IntangibleAssetsAndGoodwillByTypeAxis=nn_AcquiredSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nn_IntangibleAssetsAndGoodwillByTypeAxis=nn_AcquiredTechnologyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | nn_IntangibleAssetsAndGoodwillByTypeAxis=nn_InternalUseSoftwareMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |