Acquisition of Hotel and Other Properties (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		9 Months Ended	1 Months Ended		1 Months Ended		0 Months Ended		1 Months Ended		0 Months Ended					3 Months Ended	9 Months Ended		9 Months Ended	1 Months Ended		1 Months Ended		1 Months Ended
	Sep. 30, 2013 room	Sep. 30, 2012	Sep. 30, 2013 room	Sep. 30, 2012	Sep. 30, 2013 2013 acquisitions room	Sep. 30, 2013 2013 acquisitions room	Sep. 30, 2013 2013 acquisitions Lease intangibles	Sep. 30, 2013 2013 acquisitions Management agreement intangibles	Mar. 31, 2013 Courtyard Houston Downtown	Mar. 19, 2013 Courtyard Houston Downtown room	Mar. 31, 2013 Residence Inn Houston Downtown	Mar. 19, 2013 Residence Inn Houston Downtown room	Mar. 19, 2013 Humble Tower Apartments room		Mar. 31, 2013 Humble Tower Apartments		Jun. 17, 2013 Courtyard Waikiki Beach room	Jun. 21, 2013 Vantaggio Suites Cosmo room		Aug. 06, 2013 Residence Inn Atlanta Midtown room		Sep. 30, 2012 2012 acquisitions room	Sep. 30, 2012 2012 acquisitions room	Sep. 30, 2012 2012 acquisitions Lease intangibles	Sep. 30, 2012 2012 acquisitions Management agreement intangibles	May 31, 2012 Residence Inn Bethesda	May 29, 2012 Residence Inn Bethesda room	May 31, 2012 Courtyard New York Manhattan/Upper East Side	May 30, 2012 Courtyard New York Manhattan/Upper East Side room	Jun. 30, 2012 Hilton Garden Inn San Francisco/Oakland Bay Bridge	Jun. 11, 2012 Hilton Garden Inn San Francisco/Oakland Bay Bridge room
Acquisition of Hotel Properties
Rooms	22,281		22,281		1,071	1,071				191		171	82	[1]			399	150	[2]	78	[3]	691	691				187		226		278
Noncash or Part Noncash Acquisition, Value of Assets Acquired																				$ 4,700,000	[3]
Purchase Price					188,700,000	188,700,000				34,300,000		29,400,000	15,600,000	[1]			75,300,000	29,400,000	[2]			182,700,000	182,700,000				64,500,000		82,000,000		36,200,000
% Interest			100.00%						100.00%		100.00%				100.00%	[1]	100.00%	100.00%	[2]	100.00%	[3]					100.00%		100.00%		100.00%
Number of rooms in a Spring Hill Suites branded hotel into which property will be converted													166
Allocation of purchase price for the hotel properties acquired and liabilities assumed
Land and land improvements					24,132,000	24,132,000																40,711,000	40,711,000
Buildings and improvements					169,070,000	169,070,000																135,727,000	135,727,000
Furniture, fixtures and equipment					3,151,000	3,151,000																6,220,000	6,220,000
Intangibles							342,000	(3,695,000)																0	0
Total								193,000,000																	182,658,000
Bargain purchase gain								(4,269,000)																	0
Total Purchase Price					188,731,000	188,731,000																182,658,000	182,658,000
Total revenues and net income (loss) from hotels acquired
Revenue	252,395,000	224,250,000	728,631,000	629,130,000	11,179,000	17,741,000																11,279,000	14,301,000
Net income	36,928,000	15,301,000	86,497,000	27,399,000	2,056,000	1,488,000																2,005,000	(408,000)
Unaudited condensed pro forma financial information
Revenue	252,679,000	238,788,000	745,618,000	687,496,000
Net income	$ 33,607,000	$ 20,228,000	$ 85,906,000	$ 42,137,000
Net income per share attributable to common shareholders - basic (in dollars per share)	$ 0.28	$ 0.19	$ 0.74	$ 0.40
Net income per share attributable to common shareholders - diluted (in dollars per share)	$ 0.27	$ 0.19	$ 0.73	$ 0.40
Weighted average number of shares outstanding - basic (in shares)	121,594,219	105,453,978	116,697,417	105,392,071
Weighted average number of shares outstanding - diluted (in shares)	122,750,121	105,509,104	117,797,670	105,446,211

[1] Conversion to a 166-room SpringHill Suites expected to be complete by mid-2015.

[2] The property is not currently open for operations. Conversion to a 150-room Courtyard expected to be complete by late 2014.

[3] The Company was the successful bidder at a foreclosure sale of the property collateralizing a non-performing loan (see Note 6).The property was operating at the time of the acquisition and was subsequently closed for a major renovation, which is expected to be complete in the third quarter of 2014.