Other Transactions (Details) (USD $)	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 16, 2014	Sep. 28, 2012
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash in escrow from investment	$ 0	$ 5,000,000	$ 0
Proceeds from the sale of assets	8,134,000	2,504,000	35,974,000
Accounts receivable from affiliates	57,421,000	32,636,000
Hyster-Yale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Other recognized expenses of spin-off			3,400,000
Other recognized expenses of spin-off, net of tax			3,000,000
Shares Outstanding Class A | Hyster-Yale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distributed shares					1
Shares Outstanding Class B | Hyster-Yale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distributed shares					1
Weston Products, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Preliminary purchase price				25,400,000
Cash paid at closing				25,000,000
Net working capital and EBITDA adjustment				400,000
NACoal
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash in escrow from investment		5,000,000
Number of draglines sold			2
Number of draglines sold for a gain			1
NACoal | Dragline
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of property			3,300,000
Proceeds from the sale of assets			31,200,000
NACoal | Land
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of property	2,200,000		3,500,000
Coyote Creek
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounts receivable from affiliates	53,200,000	27,900,000
Assets Held-for-sale [Member] | NACoal
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain on sale of property	$ 3,500,000