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Other Events and Transactions (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 28, 2017
Dec. 31, 2017
Jun. 30, 2017
Dec. 31, 2018
Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Cash dividends received from Hamilton Beach Brands Holding Co.       $ 0 $ (38,000)
HBBHC          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Cash dividends received from Hamilton Beach Brands Holding Co. $ (35,000)   $ (3,000)    
Fees received   $ 200   $ 500  
Discontinued Operations, Disposed of by Means Other than Sale, Spinoff | HBBHC          
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
NACCO expenses related to the spin-off         $ 2,759