|**Segment Data (Tables)**                            | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
|---------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|
|**Segment Reporting [Abstract]**                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Schedule of Operating Results for Reportable Segment | Summarized financial information for our reportable segment is shown in the following table:Third QuarterFirst Nine Months(In thousands)2024202320242023RevenuesIndustrial Solutions$44,207$57,262$159,965$161,193Total revenues$44,207$57,262$159,965$161,193Operating income (loss) from continuing operationsIndustrial Solutions7,28614,33639,61441,593Corporate office(6,052)(8,063)(18,907)(24,730)Total operating income from continuing operations$1,234$6,273$20,707$16,863
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                     | Third Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|(In thousands)                                       | 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Revenues                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Industrial Solutions                                 | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Total revenues                                       | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Operating income (loss) from continuing operations   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Industrial Solutions                                 | 7,286                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Corporate office                                     | (6,052)                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Total operating income from continuing operations    | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Schedule of Operating Results                        | Operating results shown above include the following items: Third QuarterFirst Nine Months(In thousands)2024202320242023Severance costs$49$162$742$254Gain on legal settlement——(550)—Gain on insurance recovery——(67)—Total Industrial Solutions49162125254Severance costs643041791,233Total Corporate office643041791,233Total$113$466$3041,487                                                                                                                                    
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                     | Third Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|(In thousands)                                       | 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Severance costs                                      | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Gain on legal settlement                             | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Gain on insurance recovery                           | —                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Total Industrial Solutions                           | 49                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Severance costs                                      | 64                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|Total Corporate office                               | 64                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|Total                                                | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Schedule of Disaggregated Revenues, Segment          | The following table presents further disaggregated revenues for the Industrial Solutions segment by type:Third QuarterFirst Nine Months(In thousands)2024202320242023Rental revenues$18,873$20,370$63,787$63,244Service revenues13,53517,69540,19851,130Product sales revenues11,79919,19755,98046,819Total Industrial Solutions revenues$44,207$57,262$159,965$161,193                                                                                                             
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                     | Third Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|(In thousands)                                       | 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|Rental revenues                                      | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Service revenues                                     | 13,535                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Product sales revenues                               | 11,799                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
|Total Industrial Solutions revenues                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|Schedule of Disaggregated Revenues, Geographic       | The following table presents further disaggregated revenues for the Industrial Solutions segment by geography:Third QuarterFirst Nine Months(In thousands)2024202320242023United States$40,599$53,667$149,044$150,403United Kingdom3,6083,59510,92110,790Total Industrial Solutions revenues$44,207$57,262$159,965$161,193                                                                                                                                                          
|                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     
|                                                     | Third Quarter                                                                                                                                                                                                                                                                                                                                                                                                                                                                       
|(In thousands)                                       | 2024                                                                                                                                                                                                                                                                                                                                                                                                                                                                                
|United States                                        | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
|United Kingdom                                       | 3,608                                                                                                                                                                                                                                                                                                                                                                                                                                                                               
|Total Industrial Solutions revenues                  | $                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   

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