Discontinued Operations - Additional Information (Details)			3 Months Ended			9 Months Ended		12 Months Ended
	Jan. 29, 2016 EUR (€)	Jan. 29, 2016 USD ($)	Sep. 30, 2016 EUR (€)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 16, 2015 EUR (€)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain from discontinued operations and disposal, net of tax				$ 1,000,000	$ 3,000,000	$ 3,900,000	$ 3,600,000
Escrow Deposit				4,000,000		4,000,000
Reduction in uncertain tax position reserves						1,000,000
Proceeds from sale of business						0	$ 4,000,000
Deferred tax liability								$ 6,300,000
Other current liabilities				2,600,000		2,600,000		6,400,000
Other long-term liabilities				3,300,000		3,300,000		14,600,000
Deferred tax assets, net				0		0		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		900,000
Foreign Exchange Forward
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Notional amount | €									€ 76,000,000
Fair value of derivatives		$ 900,000						600,000
Gain on derivative						300,000
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
Net income (loss) from operations						$ (600,000)
Proceeds from sale of business	€ 76,000,000	$ 82,300,000	€ 5,100,000	5,700,000
Income tax expense (benefit)				4,600,000
Other current liabilities				1,500,000		1,500,000		4,000,000
Other long-term liabilities				700,000		700,000		5,500,000
Fire Rescue | 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
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				$ 2,300,000		$ 2,300,000		$ 2,300,000