Fair Value of Financial Instruments (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Minimum | Assumed Mortgage Notes Payable
Fair Value of Financial Instruments (Details) [Line Items]
Interest rate (in percentage)	3.60%
Maximum | Assumed Mortgage Notes Payable
Fair Value of Financial Instruments (Details) [Line Items]
Interest rate (in percentage)	4.70%
Weighted Average | Assumed Mortgage Notes Payable
Fair Value of Financial Instruments (Details) [Line Items]
Interest rate (in percentage)	3.90%
Significant Other Observable Inputs (Level 2) | Senior Notes Due 2024
Fair Value of Financial Instruments (Details) [Line Items]
Long-term debt, fair value	$ 238.8
Significant Other Observable Inputs (Level 2) | Senior Notes Due 2023
Fair Value of Financial Instruments (Details) [Line Items]
Long-term debt, fair value	255.3
Significant Unobservable Inputs (Level 3) | Assumed Mortgage Notes Payable
Fair Value of Financial Instruments (Details) [Line Items]
Notes payable, fair value	35.9
Significant Unobservable Inputs (Level 3) | Originated Mortgage Notes Payable
Fair Value of Financial Instruments (Details) [Line Items]
Notes payable, fair value	$ 32.6
Interest rate (in percentage)	4.70%
Significant Unobservable Inputs (Level 3) | Senior Notes Due 2026
Fair Value of Financial Instruments (Details) [Line Items]
Long-term debt, fair value	$ 191.2