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Discontinued Operations - Additional Information (Details) - USD ($)
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain from discontinued operations and disposal, net of tax $ 100,000 $ 3,200,000  
Reduction in uncertain tax position reserves 100,000 4,400,000  
Other current liabilities 900,000   $ 2,100,000
Other long-term liabilities 2,000,000   2,000,000
Deferred tax assets, net     0
Environmental Restoration Costs      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Other current liabilities 600,000   600,000
Latvian Commercial Dispute      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Charge in period from litigation $ 1,500,000    
Percent of liability owed from litigation 0.50    
Percent of legal fees 50.00%    
Fire Rescue      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Gain (loss) on disposal   4,000,000  
Other current liabilities $ 0   1,300,000
Other long-term liabilities 0   0
North American Refuse Truck Body Business      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Other long-term liabilities $ 1,800,000   $ 1,800,000
Discontinued Operations, Held-for-sale | Fire Rescue      
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]      
Net loss from operations   (600,000)  
Income tax benefit   $ (200,000)