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Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Information [Line Items]      
Property and equipment additions $ 5,655 $ 3,090 $ 1,028
Depreciation and amortization 10,609 13,272 16,088
Identifiable assets 408,637 392,582  
Energy Solutions Segment [Member]      
Segment Reporting Information [Line Items]      
Property and equipment additions 434 205 444
Depreciation and amortization 6,084 8,112 9,675
Identifiable assets 254,752 245,842  
Industrial Solutions Segment [Member]      
Segment Reporting Information [Line Items]      
Property and equipment additions 402 756 160
Depreciation and amortization 1,320 1,067 1,488
Identifiable assets 64,725 54,179  
Fluid Handling Solutions Segment [Member]      
Segment Reporting Information [Line Items]      
Property and equipment additions 3,239 1,226 382
Depreciation and amortization 2,795 3,517 4,754
Identifiable assets 71,572 73,910  
Corporate and Other [Member]      
Segment Reporting Information [Line Items]      
Property and equipment additions 1,580 903 42
Depreciation and amortization 410 576 $ 171
Identifiable assets $ 17,588 $ 18,651