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Significant Accounting Policies (Narrative) (Details) (USD $) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2012 Reportable_Segment Operation | Dec. 31, 2011 Operation | Dec. 31, 2010 | Dec. 31, 2012 | Feb. 03, 2006 Defined_Benefit_Plan
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Number of principal reporting segments |  |  |  | 3 |  |  |  |
Outstanding forward exchange contracts related to sales | $ 2,409,000 |  |  | $ 2,409,000 |  |  |  |
Goodwill, Balance at the beginning of the period |  |  |  | 31,751,000 | 34,073,000 | 35,207,000 | 31,648,000 |
Goodwill percentage of total assets | 8.00% |  |  | 8.00% |  |  |  |
Number of operations |  |  |  | 1 | 2 |  |  |
Goodwill impairment | 656,000 | 1,900,000 |  | 656,000 | 1,898,000 | 0 |  |
Intangible assets |  | 5,500,000 |  |  | 5,500,000 |  |  |
Intangibles wrote off |  |  | 224,000 |  |  |  |  |
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 | 1,320,000 |  | 1,092,000 | 1,320,000 |  |  |
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 | 184,000 |  | 115,000 | 184,000 |  | 115,000 |
Software Development |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Software depreciation depreciation |  |  |  | 676,000 | 822,000 | 749,000 |  |
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 |  |  | 3,600,000 |
Bush Hog | Trade Names |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Indefinite-lived intangible assets | 1,900,000 |  |  | 1,900,000 |  |  | 1,900,000 |
Trademarks |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Intangible assets | 5,500,000 |  |  | 5,500,000 |  |  | 5,500,000 |
Hourly Employees’ Pension Plan |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Former employees |  |  |  | 334 |  |  |  |
Current employees |  |  |  | 134 |  |  |  |
Employees’ Retirement Plan |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Former employees |  |  |  | 242 |  |  |  |
Current employees |  |  |  | 88 |  |  |  |
Schwarze |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Goodwill, Balance at the beginning of the period |  |  |  |  |  |  | 6,800,000 |
Rivard |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Goodwill, Balance at the beginning of the period |  |  |  |  |  |  | 11,800,000 |
Sales |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Prior period reclassification of revenue and cost of sales |  |  |  | 15,300,000 | 15,600,000 | 14,000,000 |  |
Cost of Sales |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Prior period reclassification of revenue and cost of sales |  |  |  | (15,300,000) | (15,600,000) | (14,000,000) |  |
Other income (expense) |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Foreign currency transaction gains |  |  |  | (476,000) | 816,000 | 265,000 |  |
Selling, General and Administrative expenses |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Advertising expense |  |  |  | 6,353,000 | 6,441,000 | 5,135,000 |  |
Product development and engineering costs |  |  |  | 5,686,000 | 6,017,000 | 5,774,000 |  |
Scenario, Forecast |  |  |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |  |  |
Unrealized gain of contracts |  |  |  | $ (88,000) |  |  |  |

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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph g -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 86 -Paragraph 11, 12 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 2 -Paragraph 12, 13 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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