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Discontinued Operations - Additional Information (Detail) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 29, 2016 EUR (€) | Jan. 29, 2016 USD ($) | Jun. 30, 2016 EUR (€) | Jun. 30, 2016 USD ($) | Jun. 30, 2015 USD ($) | Jun. 30, 2016 USD ($) | Jun. 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] |  |  |  |  |  |  |  |  |
(Loss) gain from discontinued operations and disposal, net of tax |  |  |  | $ (300,000) | $ 100,000 | $ 2,900,000 | $ 600,000 |  |
Deferred tax liability |  |  |  |  |  |  |  | $ 6,300,000 |
Other current liabilities |  |  |  | 3,900,000 |  | 3,900,000 |  | 6,400,000 |
Other long-term liabilities |  |  |  | 3,500,000 |  | 3,500,000 |  | 14,600,000 |
Deferred tax assets, gross |  |  |  | 4,300,000 |  | 4,300,000 |  | 3,500,000 |
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 |  |  |  |  |  | 50.00% |  |  |
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 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 |

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