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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in the carrying value of goodwill | Changes in the carrying value of goodwill for each reporting unit are as follows (in thousands):
|  | Energy Chemical Technologies |  | Consumer and Industrial Chemical Technologies |  | Teledrift TM |  | Total
Balance at December 31, 2013 |  | $ | 30,296 |  |  | $ | 20,642 |  |  | $ | 15,333 |  |  | $ | 66,271 |
Addition upon acquisition of EOGA |  | 5,312 |  |  | — |  |  | — |  |  | 5,312 |
Balance at March 31, 2014 |  | $ | 35,608 |  |  | $ | 20,642 |  |  | $ | 15,333 |  |  | $ | 71,583 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 + Details
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