Investment in Hotel Properties (Narrative) (Details) $ in Thousands														3 Months Ended								12 Months Ended
	Nov. 10, 2015 USD ($)	Oct. 15, 2015 USD ($)	Aug. 05, 2015 USD ($)	Jul. 23, 2015 USD ($)	Jul. 01, 2015 USD ($)	Jun. 17, 2015 USD ($) hotel	Jun. 04, 2015 USD ($)	Jun. 03, 2015 USD ($)	Apr. 29, 2015 USD ($)	Mar. 06, 2015 USD ($)	Feb. 25, 2015 USD ($)	Feb. 06, 2015 USD ($) hotel	Apr. 11, 2007 hotel	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jul. 02, 2015 USD ($)	Jun. 24, 2015 USD ($)	Apr. 17, 2015 USD ($)
Business Acquisition [Line Items]
Cost of land and depreciable property, net of accumulated depreciation, for federal income tax purposes														$ 3,700,000				$ 1,900,000				$ 3,700,000	$ 1,900,000
Depreciation expense, including depreciation of assets under capital leases and discontinued hotel properties																						210,100	110,600	$ 127,500
Revenues														$ 352,877	$ 364,516	$ 369,338	$ 250,235	$ 190,368	$ 201,457	$ 208,163	$ 194,861	1,336,966	794,849	939,527
Net income (loss)																						270,939	$ (31,401)	$ (41,283)
Number of hotels in portfolio acquired (in hotels) | hotel												9	51
Mortgage loan 17 [Member]
Business Acquisition [Line Items]
Face amount of debt																											$ 25,100
Lakeway Resort & Spa [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired												100.00%
Consideration transfered												$ 33,500
Revenues																						10,900
Net income (loss)																						(1,500)
Memphis Marriott East Hotel [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired											100.00%
Consideration transfered											$ 43,500
Face amount of debt											$ 33,300
Revenues																						10,400
Net income (loss)																						305
PIM Highland JV Acquisition [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired										28.26%
Consideration transfered										$ 250,100
Face amount of debt										907,600
Revenues																						409,900
Net income (loss)																						7,800
Depreciation expense reduction adjustment										1,100
Rent expense reduction adjustment										16
Indebtedness assumed										$ 907,600						$ 1,120,082	$ 1,120,082
Hampton Inn & Suites - Gainesville [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired									100.00%
Consideration transfered									$ 25,200
Face amount of debt																										$ 21,200
Revenues																						4,000
Net income (loss)																						363
Le Pavillon Hotel [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired								100.00%
Consideration transfered								$ 62,500
Face amount of debt								$ 43,800
Revenues																						7,100
Net income (loss)																						(1,500)
Princeton Westin - Land Acquisition [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired							100.00%
Consideration transfered							$ 6,500
Consideration, cash							3,400
Consideration, other							$ 3,100
The Rockbridge Hotel Portfolio [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired						100.00%
Consideration transfered						$ 225,000
Face amount of debt						$ 179,200
Revenues																						27,700
Net income (loss)																						(1,900)
Number of hotels in portfolio acquired (in hotels) | hotel						9
W Atlanta Downtown Hotel [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired					100.00%
Consideration transfered					$ 56,800
Face amount of debt																									$ 40,500
Revenues																						10,500
Net income (loss)																						(786)
Le Meridien Minneapolis Hotel [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired				100.00%
Consideration transfered				$ 15,000
Revenues																						2,900
Net income (loss)																						468
Hilton Garden Inn - Wisconsin Dells [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired			100.00%
Consideration transfered			$ 15,200
Face amount of debt			$ 12,000
Revenues																						2,000
Net income (loss)																						161
Hotel Indigo - Atlanta [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired		100.00%
Consideration transfered		$ 26,900
Revenues																						1,000
Net income (loss)																						(114)
Indebtedness assumed		$ 16,581
W Minneapolis Foshay [Member]
Business Acquisition [Line Items]
Percent of voting interests acquired	100.00%
Consideration transfered	$ 88,100
Revenues																						2,300
Net income (loss)																						$ (223)
Indebtedness assumed	$ 57,739