Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Income Tax Contingency [Line Items]
Effective income tax rate	36.00%	44.40%
Effective income tax rate, share-based compensation, excess tax benefit, percent	(7.90%)
Effective income tax rate reconciliation, state and local income taxes, percent	2.10%
Effective income tax rate reconciliation, uncertain tax positions, percent	4.20%
Unrecognized tax benefits, period increase	$ 900,000.0
Unrecognized tax benefits	3,400,000
Effective income tax rate reconciliation, unrecognized tax benefits, amount	1,900,000
Unrecognized tax benefits, interest	100,000
Unrecognized tax benefits, income tax penalties	200,000
Employment tax credit	$ 10,500,000
Internal Revenue Service (IRS)
Income Tax Contingency [Line Items]
Income tax examination, penalties and interest expense			$ 4,000,000