Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Income Taxes [Line Items]
Percentage of taxable income required to distribute annually to maintain REIT qualification, (in hundredths)	90.00%
Income tax provision	$ 17,000	$ 43,000
Federal and State Income Taxes
Income Taxes [Line Items]
Federal and state deferred tax asset	10,400,000
Federal and state deferred tax asset, valuation allowance	$ 10,100,000