Equity - Additional Information (Detail) (USD $)	12 Months Ended		0 Months Ended				12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Jan. 09, 2014 Subsequent Event Dividend Paid	Jan. 09, 2014 Subsequent Event Dividend Paid Common Stockholders	Jan. 09, 2014 Subsequent Event Dividend Paid Common Unitholders	Feb. 18, 2014 Subsequent Event Dividend Declared	Dec. 31, 2013 Subsequent Event Dividend Declared
Class of Stock [Line Items]
Authorized capital shares of common stock	500,000,000	500,000,000
Authorized capital shares of preferred stock	100,000,000
Shares of common stock issued	19,163,413	19,163,413
Shares of common stock outstanding	19,163,413	19,163,413
Common units issued	13,059,365
Percentage of Operating Partnership held	59.50%
Aggregate cash dividends and distributions, declared	$ 12,900,000
Aggregate cash dividends and distributions, paid	7,733,000		5,200,000	3,100,000	2,100,000
Aggregate dividends and distributions payable	$ 5,155,000
Cash dividend/distribution, date declared							Feb. 18, 2014
Cash dividend/distribution per share, declared	$ 0.40					$ 0.16
Cash dividend/distribution, date payable							Apr. 10, 2014
Cash dividend/distribution, date of record							Apr. 01, 2014