XML 137 R54.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Revenue Recognition (Contract Balances) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 USD ($)
Trade accounts receivable |
Balance at January 1, 2024 | $ 0
Balance at December 31, 2024 | 313
Increase (decrease) in trade accounts receivable | 313
Contract asset (current) |
Increase (decrease) in contract asset (current) | 313
Contract asset (long-term) |
Balance at January 1, 2024 | 3,712
Balance at December 31, 2024 | 3,500
Increase (decrease) in contract asset (long-term) | (212)
Contract liability (current) |
Balance at January 1, 2024 | 878
Balance at December 31, 2024 | 484
Increase (decrease) in contract liability (current) | (394)
Contract liability (long-term) |
Balance at January 1, 2024 | 1,470
Balance at December 31, 2024 | 5,119
Increase (decrease) in contract liability (long-term) | 3,649
Trade accounts receivable |
Trade accounts receivable |
Balance at January 1, 2024 | 37,429
Balance at December 31, 2024 | 49,706
Increase (decrease) in trade accounts receivable | 12,277
Contract asset (current) |
Increase (decrease) in contract asset (current) | $ 12,277

X
- Definition Change in Contract with Customer, Current Asset + References No definition available. + Details
Name: | nacco_ChangeInContractWithCustomerCurrentAssetAbstract
Namespace Prefix: | nacco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in Contract with Customer, Noncurrent Asset + References No definition available. + Details
Name: | nacco_ChangeInContractWithCustomerNoncurrentAssetRollForward
Namespace Prefix: | nacco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in Contract with Customer, Asset [Roll Forward] + References No definition available. + Details
Name: | nacco_ChangeinContractwithCustomerAssetRollForward
Namespace Prefix: | nacco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in Contract with Customer, Current Liability [Roll Forward] + References No definition available. + Details
Name: | nacco_ChangeinContractwithCustomerCurrentLiabilityRollForward
Namespace Prefix: | nacco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Change in Contract with Customer, Noncurrent Liability [Roll Forward] + References No definition available. + Details
Name: | nacco_ChangeinContractwithCustomerNoncurrentLiabilityRollForward
Namespace Prefix: | nacco_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Increase (Decrease) In Contract with Customer, Asset, after Allowance for Credit Loss, Current Asset + References No definition available. + Details
Name: | nacco_IncreaseDecreaseInContractWithCustomerAssetAfterAllowanceForCreditLossCurrent
Namespace Prefix: | nacco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) In Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent + References No definition available. + Details
Name: | nacco_IncreaseDecreaseInContractWithCustomerAssetAfterAllowanceForCreditLossNoncurrent
Namespace Prefix: | nacco_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Increase (Decrease) In Contract With Customer, Liability, Current + References No definition available. + Details
Name: | nacco_IncreaseDecreaseInContractWithCustomerLiabilityCurrent
Namespace Prefix: | nacco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Increase (Decrease) In Contract With Customer, Liability, Noncurrent + References No definition available. + Details
Name: | nacco_IncreaseDecreaseInContractWithCustomerLiabilityNoncurrent
Namespace Prefix: | nacco_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
Name: | us-gaap_ContractWithCustomerAssetNetCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 + Details
Name: | us-gaap_ContractWithCustomerAssetNetNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-2 + Details
Name: | us-gaap_ContractWithCustomerLiabilityCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-8 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479837/606-10-45-2 + Details
Name: | us-gaap_ContractWithCustomerLiabilityNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_TradeAccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |