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Business Segment Information - Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Segment Reporting Information [Line Items] |  |  |  |  |
Property and equipment additions | $ 296 | $ 183 | $ 711 | $ 236 |
Depreciation and amortization | 2,619 | 899 | 5,389 | 1,313 |
Identifiable Assets | 333,626 |  | 333,626 |  | 348,536
Air Pollution Control Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and equipment additions | 132 | 42 | 268 | 94 |
Depreciation and amortization | 383 | 243 | 778 | 498 |
Identifiable Assets | 73,556 |  | 73,556 |  | 74,556
Energy Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and equipment additions | 33 | 141 | 67 | 142 |
Depreciation and amortization | 564 | 615 | 1,219 | 733 |
Identifiable Assets | 64,232 |  | 64,232 |  | 76,960
Fluid Handling Filtration Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and equipment additions | 119 | 0 | 333 | 0 |
Depreciation and amortization | 1,637 | 8 | 3,325 | 16 |
Identifiable Assets | 178,446 |  | 178,446 |  | 185,646
Corporate and Other [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Property and equipment additions | 12 | 0 | 43 | 0 |
Depreciation and amortization | 35 | 33 | 67 | 66 |
Identifiable Assets | $ 17,392 |  | $ 17,392 |  | $ 11,374

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
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- Definition The aggregate expense recognized in the current period that allocates the cost of tangible assets, intangible assets, or depleting assets to periods that benefit from use of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
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