Description of business and basis of presentation (Details) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
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Mar. 31, 2021
USD ($)
segment
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Mar. 31, 2020
USD ($)
|
Dec. 31, 2020
USD ($)
|
|
| Description of business and basis of presentation | |||
| Number of operating segments | segment | 2 | ||
| Non-qualified benefit plan assets | $ 9,376 | $ 9,041 | |
| Amount of total benefit | $ 1,152 | ||
| Retained earnings | $ 41,664 | $ 47,712 | |
| X | ||||||||||
- Definition The amount of total benefit to cost of sales and selling, general and administrative Expense in connection with passage of CARES Act due to the COVID-19 crisis. No definition available.
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| X | ||||||||||
- Definition Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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