XML 188 R31.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Revenue Recognition (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
Revenue from Contract with Customer [Abstract] |
Schedule of Disaggregation of Revenue | The following table disaggregates revenue by major sources for the years ended December 31:
Major Goods/Service Lines | 2023 |  | 2022
Coal Mining | $ | 85,415 |  |  | $ | 95,204 |
NAMining | 90,532 |  |  | 85,664 |
Minerals Management | 32,985 |  |  | 60,242 |
Unallocated Items | 8,459 |  |  | 2,952 |
Eliminations | (2,597) |  |  | (2,343) |
Total revenues | $ | 214,794 |  |  | $ | 241,719 |
Timing of Revenue Recognition |  |  |
Goods transferred at a point in time | $ | 83,273 |  |  | $ | 92,842 |
Services transferred over time | 131,521 |  |  | 148,877 |
Total revenues | $ | 214,794 |  |  | $ | 241,719 |
Schedule of Contract Balances | The opening and closing balances of the Company’s current and long-term contract assets and liabilities and receivables are as follows:
| Contract balances
| Trade accounts receivable |  | Contract asset (current) |  | Contract asset (long-term) |  | Contract liability (current) |  | Contract liability (long-term)
Balance at January 1, 2023 | $ | 37,940 |  |  | $ | 409 |  |  | $ | 5,985 |  |  | $ | 833 |  |  | $ | 1,709 |
Balance at December 31, 2023 | 37,429 |  |  | — |  |  | 3,712 |  |  | 878 |  |  | 1,470 |
Increase (decrease) | $ | (511) |  |  | $ | (409) |  |  | $ | (2,273) |  |  | $ | 45 |  |  | $ | (239) |

X
- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-10 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479806/606-10-50-5 + Details
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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