Summary of Significant Accounting Policies - Summary of Range of useful Lives For Depreciable Assets (Detail)	12 Months Ended
	Dec. 31, 2015
Building [Member]
Property Plant And Equipment [Line Items]
Building improvements	40 years
Building Improvements [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Building improvements	5 years
Building Improvements [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Building improvements	40 years
Furniture and Equipment [Member] | Minimum [Member]
Property Plant And Equipment [Line Items]
Building improvements	3 years
Furniture and Equipment [Member] | Maximum [Member]
Property Plant And Equipment [Line Items]
Building improvements	7 years