Fair Value Measurements - Summary of the Face Value, Carrying Amount and Fair Value of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Financial assets:
Preferred equity investment - face value	$ 12,031	$ 12,031
Preferred equity investment	14,000
Financial liabilities:
Senior unsecured notes payable, net	255,561	255,294
Senior unsecured notes payable | Level 2
Financial liabilities:
Financial liabilities - face value	260,000	260,000
Carrying Amount
Financial assets:
Preferred equity investment	14,027	13,872
Carrying Amount | Level 2
Financial liabilities:
Senior unsecured notes payable, net	255,561	255,294
Fair Value
Financial assets:
Preferred equity investment	14,727	14,289
Fair Value | Level 2
Financial liabilities:
Senior unsecured notes payable, net	$ 267,800	$ 265,850