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Acquisitions and Investments (Narrative) (Details) - USD ($) |  |  | 3 Months Ended | 8 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 09, 2015 | May. 13, 2014 | Jun. 30, 2015 | Dec. 31, 2014 | Dec. 31, 2015 | May. 12, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  |  | $ 75,691,000 | $ 75,509,000 |  | $ 32,073,000 | $ 31,648,000
Industrial |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  |  |  | 57,320,000 | 56,293,000 |  |  |
Herder Implementos e Maquinas Agricolas Ltda [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Total consideration transferred | $ 4,000,000 |  |  |  |  |  |  |
Specialized Industries LP |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Total consideration transferred |  | $ 193,000,000 |  |  |  |  |  |
Period for post closing adjustments |  | 90 days |  |  |  |  |  |
New borrowings under the amended credit facility |  | $ 190,000,000 |  |  |  |  |  |
Purchase price allocation adjustment for unrecognized deferred tax liability related to intangible assets |  |  | $ 3,300,000 |  |  |  |  |
Increase in goodwill, adjustment to purchase price allocation |  |  | $ 3,300,000 |  |  |  |  |
Goodwill |  | 44,611,000 |  |  |  |  |  |
Goodwill that is tax deductible |  | 31,500,000 |  |  |  |  |  |
Acquisition costs incurred |  |  |  |  | $ 1,800,000 |  |  |
Net sales generated by Specialized business units |  |  |  | 107,400,000 |  |  |  |
Net income generated by Specialized business units |  |  |  | $ 5,100,000 |  |  |  |
Specialized Industries LP | Industrial |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Goodwill |  | 44,600,000 |  |  |  |  |  |
Revolving Credit Facility | Amended and Restated Revolving Credit Agreement | Specialized Industries LP |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Line of credit |  | $ 250,000,000 |  |  |  | $ 100,000,000 |  |

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