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Significant Accounting Policies (Narrative) (Details) (USD $) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2013 Reportable_Segment | Dec. 31, 2012 Operation | Dec. 31, 2011 Operation | Dec. 31, 2013 | Feb. 03, 2006 Defined_Benefit_Plan
Accounting Policies [Line Items] |  |  |  |  |  |
Number of principal reporting segments |  | 3 |  |  |  |
Outstanding forward exchange contracts related to sales |  | $ 2,884,000 |  |  |  |
Goodwill, Balance at the beginning of the period |  | 31,648,000 | 31,751,000 | 34,073,000 | 32,073,000 |
Goodwill percentage of total assets |  | 7.00% |  |  |  |
Number of operations |  |  | 1 | 2 |  |
Goodwill impairment | 656,000 | 0 | 656,000 | 1,898,000 |  |
Hypothetical percentage decline in fair value of each reporting unit |  | 15.00% |  |  |  |
Intangible assets | 5,500,000 |  | 5,500,000 |  |  |
Number of defined benefit pension plans |  |  |  |  |  | 2
Period for payment for supplemental retirement benefit |  | 14 years 6 months |  |  |  |
Book value of capitalized software | 1,092,000 | 944,000 | 1,092,000 |  |  |
Option term (years) |  | 10 years |  |  |  |
Options |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Award vesting period (years) |  | 5 years |  |  |  |
Accrued liabilities and Other long-term liabilities |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Supplemental retirement benefit liability | 115,000 | 40,000 | 115,000 |  | 40,000 |
Software Development |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Software depreciation |  | 488,000 | 676,000 | 822,000 |  |
Software Development | Low |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Useful Lives |  | 2 years |  |  |  |
Software Development | High |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Useful Lives |  | 7 years |  |  |  |
Gradall | Trade Names |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Indefinite-lived intangible assets |  | 3,600,000 |  |  | 3,600,000 |
Bush Hog | Trade Names |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Indefinite-lived intangible assets |  | 1,900,000 |  |  | 1,900,000 |
Trademarks |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Intangible assets |  | 5,500,000 |  |  | 5,500,000 |
Hourly Employees’ Pension Plan |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Former employees |  | 330 |  |  |  |
Current employees |  | 133 |  |  |  |
Employees’ Retirement Plan |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Former employees |  | 239 |  |  |  |
Current employees |  | 87 |  |  |  |
Schwarze |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill, Balance at the beginning of the period |  |  |  |  | 6,900,000 |
Rivard |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Goodwill, Balance at the beginning of the period |  |  |  |  | 12,300,000 |
Other income (expense) |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Foreign currency transaction gains |  | 921,000 | (476,000) | 816,000 |  |
Selling, General and Administrative expenses |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Advertising expense |  | 6,646,000 | 6,353,000 | 6,441,000 |  |
Product development and engineering costs |  | 7,164,000 | 5,686,000 | 6,017,000 |  |
Scenario, Forecast |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Unrealized gain of contracts |  | $ 11,000 |  |  |  |

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