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Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income tax expense	$ 5,700,000	$ 8,500,000	$ 16,200,000	$ 27,200,000
Effective tax rate	43.20%	35.00%	37.20%	36.00%
Deferred tax assets, gross	$ 4,700,000		$ 4,700,000		$ 3,500,000
Deferred tax assets, net	$ 0		$ 0		$ 0

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Amount classified as deferred tax assets attributable to disposal group held for sale or disposed of.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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