Subsequent Events (Details) (USD $)	6 Months Ended				1 Months Ended	6 Months Ended		0 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended
	Jun. 30, 2012 GuestRooms	Jun. 30, 2011	Jul. 13, 2012	Jul. 10, 2012	Jul. 31, 2012 ATMProgram [Member]	Jun. 30, 2012 ATMProgram [Member]	Jul. 24, 2012 ATMProgram [Member]	Jul. 13, 2012 Minimum [Member]	Jun. 30, 2012 Minimum [Member]	Jul. 13, 2012 Maximum [Member]	Jun. 30, 2012 Maximum [Member]	Jul. 09, 2012 HotelVintageParkSeattle and HotelVintagePlazaPortland [Member]	Jul. 24, 2012 Term Loan [Member]	Jul. 13, 2012 Term Loan [Member]	Jul. 09, 2012 Hotel Acquisition [Member] Hotel Vintage Park Seattle [Member] GuestRooms	Jul. 09, 2012 Hotel Acquisition [Member] Hotel Vintage Plaza Portland [Member] GuestRooms
Subsequent Events (Textual) [Abstract]
Total number of guest rooms	3,920														125	117
Acquisition price												$ 63,000,000
2009 Equity Incentive Plan - Number of Shares Authorized	1,300,000			2,400,000
Restated Line Of Credit Facility Increase In Borrowing Capacity			300,000,000
Senior unsecured revolving credit facility	200,000,000		200,000,000											100,000,000
Line of Credit Facility, Maximum Borrowing Capacity	400,000,000		600,000,000
LIBOR base rate plus								1.75%	2.50%	2.50%	3.50%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage								0.25%	0.35%	0.35%	0.50%
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate													2.40%
Common shares issued, net of commissions					1,253,228	1,444,527
Common shares issued, net of commissions (per share)					$ 23.02	$ 23.03
Proceeds from Issuance of Common Stock	147,631,000	235,980,000			28,400,000	32,800,000
Value of common shares available under ATM Program						$ 91,700,000	$ 62,900,000