Investment In Hotel Properties (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016	Jul. 31, 2016
Business Acquisition [Line Items]
Acquisition costs	$ 1,124	$ 1,824
Assumption of Debt	44,483	44,483
Proceeds from Contribution of Hotel Property Assets to Unconsolidated Joint Venture			$ 428,811
Total Purchase Price		300,699
Investment in hotel properties	2,051,750	2,051,750		$ 1,767,570
Reduction of consolidated mortgage debt		121,852	64,710
Reduction to line of credit and unsecured term loan balance			27,000
Repayment of Unsecured Term Loan Borrowing			$ 39,480
Residence Inn, Greenbelt, MD, and the Courtyard, Alexandria, VA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Business Acquisition [Line Items]
Total sales price	$ 62,000	62,000
Approximate gain (loss) on sale		18,731
Residence Inn, Greenbelt, MD, Courtyard, Alexandria, VA, Hyatt House, Scottsdale, AZ, Hyatt House, Pleasant Hill, CA, and Hyatt House, Pleasanton, CA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Business Acquisition [Line Items]
Sale Agreement, Total Purchase Price					$ 185,000
Sale Agreement Increase (Decrease) In Total Purchase Price		7,500
Hyatt House, Scottsdale, AZ, Hyatt House, Pleasant Hill, CA, and Hyatt House, Pleasanton, CA [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Business Acquisition [Line Items]
Total Purchase Price		130,500
Approximate gain (loss) on sale		$ 70,852