Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2015
USD ($)
OperatingSegment
|
Dec. 31, 2014
USD ($)
|
Dec. 31, 2013
USD ($)
|
|
Summary Of Significant Accounting Policies [Line Items] | |||
Interest expense and loan cost amortization | $ 45.3 | $ 31.5 | $ 11.5 |
Capitalized amount of interest | 2.3 | 1.0 | $ 0.7 |
Accumulated amortization of loan costs | $ 7.8 | $ 4.3 | |
Lease, initial term | 3 months | ||
Lease termination, notice period | 30 days | ||
Annualized return of investment | 6.00% | ||
Number of segment | OperatingSegment | 1 | ||
Building and Building Improvements | Maximum | |||
Summary Of Significant Accounting Policies [Line Items] | |||
Real estate assets, estimated useful life | 39 years | ||
Building and Building Improvements | Minimum | |||
Summary Of Significant Accounting Policies [Line Items] | |||
Real estate assets, estimated useful life | 15 years |