Significant Accounting Policies and Practices - Schedule of New Accounting Pronouncements (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Assets
Prepaid expenses and other	$ 14,400,000	$ 17,200,000
Right of use assets	481,000,000.0	0
Favorable acquired lease contracts, net	0	17,600,000
Cost of contracts, net	4,700,000	9,200,000
Liabilities
Accrued rent	15,700,000	23,500,000
Short-term lease liabilities	123,000,000	0
Long-term lease liabilities	369,700,000	0
Unfavorable lease contracts, net	0	24,700,000
Other long-term liabilities	58,400,000	$ 58,600,000
Balances without Adoption of Topic 842
Assets
Prepaid expenses and other	15,000,000
Right of use assets	0
Favorable acquired lease contracts, net	16,700,000
Cost of contracts, net	9,000,000
Liabilities
Accrued rent	23,700,000
Short-term lease liabilities	0
Long-term lease liabilities	0
Unfavorable lease contracts, net	22,500,000
Other long-term liabilities	61,200,000
Accounting Standards Update 2016-02
Assets
Prepaid expenses and other	(600,000)
Right of use assets	481,000,000
Favorable acquired lease contracts, net	(16,700,000)
Cost of contracts, net	(4,300,000)
Liabilities
Accrued rent	(8,000,000)
Short-term lease liabilities	123,000,000
Long-term lease liabilities	369,700,000
Unfavorable lease contracts, net	(22,500,000)
Other long-term liabilities	$ (2,800,000)