Acquisition of Hotel Properties - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended					12 Months Ended
	Jan. 01, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jul. 14, 2011	Dec. 27, 2012 Portland Hotel	Dec. 31, 2012 Five Sisters	Dec. 31, 2011 Five Sisters
Business Acquisition [Line Items]
Business acquisition cost of acquired entity, purchase price					$ 195,000,000	$ 28,000,000
Acquisition costs incurred		236,000	7,706,000	3,189,000
Revenue							36,900,000	16,200,000
Operating income							17,600,000	7,600,000
Unaudited proforma excluding acquisition costs			$ 3,200,000
Shares issued	13,819,939