Basis of Presentation and Significant Accounting Policies - Narrative (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($) segment	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Significant Accounting Policies [Line Items]
Number of reportable segments | segment	6
Minimum
Significant Accounting Policies [Line Items]
Percentage of sales price fee from construction management agreements	3.00%
Maximum
Significant Accounting Policies [Line Items]
Percentage of sales price fee from construction management agreements	5.00%
Accrued Expenses
Significant Accounting Policies [Line Items]
Lease liability	$ 15.6		$ 12.6
Accrued Expenses | Restatement Adjustment
Significant Accounting Policies [Line Items]
Sale Leaseback Transaction, Amount Due under Financing Arrangement		$ 19.8