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Acquisitions (Identifiable Intangible Assets Acquired) (Details) - USD ($) $ in Thousands | Nov. 23, 2015 | Mar. 13, 2015 | Jan. 13, 2015
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TEW Plus LTD |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets | $ 1,074 |  |
TEW Plus LTD | Trade name |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets | 0 |  |
TEW Plus LTD | Customer relationships |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets | 817 |  |
TEW Plus LTD | Technology |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets | 203 |  |
TEW Plus LTD | Non-competition agreements |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets | $ 54 |  |
Inspection Oilfield Services (IOS) |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  | $ 50,354 |
Inspection Oilfield Services (IOS) | Trade name |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  | 2,641 |
Inspection Oilfield Services (IOS) | Customer relationships |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  | 41,171 |
Inspection Oilfield Services (IOS) | Technology |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  | 4,364 |
Inspection Oilfield Services (IOS) | Non-competition agreements |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  | $ 2,178 |
TEW Holdings, LTD |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  |  | $ 14,048
TEW Holdings, LTD | Trade name |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  |  | 870
TEW Holdings, LTD | Customer relationships |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  |  | 10,035
TEW Holdings, LTD | Technology |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  |  | 2,480
TEW Holdings, LTD | Non-competition agreements |  |  |
Acquired Finite-Lived Intangible Assets |  |  |
Fair value estimate of acquired identifiable intangible assets |  |  | $ 663

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- Definition The amount of identifiable intangible assets recognized as of the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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