Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Minimum Distribution Percentage of Taxable Income to Qualify for Real Estate Investment Trust	90.00%
Tax benefits associated with equity-based compensation	$ 1,479,000	$ 525,000	$ 665,000
Effective tax rate	3.60%	3.60%	3.40%
Liabilities for uncertain tax positions	$ 0	$ 0
Income tax receivable	$ 8,800,000	$ 21,200,000