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Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Changes in the carrying amount of goodwill | The changes in the carrying amount of goodwill are as follows (in thousands):
| Well Intervention |  | Robotics |  | Total
Balance at December 31, 2013 | $ | 18,123 |  |  | $ | 45,107 |  |  | $ | 63,230 |
Other adjustments (1) | (1,084 | ) |  | — |  |  | (1,084 | )
Balance at December 31, 2014 | 17,039 |  |  | 45,107 |  |  | 62,146 |
Impairment loss | (16,399 | ) |  | — |  |  | (16,399 | )
Other adjustments (1) | (640 | ) |  | — |  |  | (640 | )
Balance at December 31, 2015 | $ | — |  |  | $ | 45,107 |  |  | $ | 45,107 |
(1) | Reflects foreign currency adjustment related to the goodwill of our U.K. well intervention reporting unit.

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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=35741047&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=35741047&loc=d3e13854-109267 + Details
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