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Acquisitions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified | Dec. 03, 2011 Powerlink Specialist Electronics Support Limited | Sep. 05, 2011 Powerlink Specialist Electronics Support Limited | Dec. 01, 2012 D and C Import-Export Inc. | Sep. 04, 2012 D and C Import-Export Inc.
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Business Acquisition [Line Items] |  |  |  |
Acquisition of assets |  | $ 2.3 |  | $ 2.6
Working capital adjustment included in assets |  | 0.2 |  |
Working capital adjustment related to payables paid |  | 0.2 |  |
Trade receivables included in purchase price | 0.4 |  | 0.2 |
Inventory included in purchase price | 0.2 |  | 1.5 |
Other intangibles included in purchase price | 0.4 |  | 0.7 |
Goodwill included in purchase price | $ 1.4 |  | $ 0.2 |

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