Commitments and Contingencies - Ground Leases Annual Rent (Details) - USD ($)	1 Months Ended		12 Months Ended
	Jan. 31, 2031	Jan. 31, 2019	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2018
Bethesda Marriott Suites
Schedule of Ground Leased Assets [Line Items]
Annual increase in rent			5.50%
Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Ground leases renewal option (in years)			49 years
Courtyard Manhattan/Fifth Avenue | Maximum
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			5.00%
Salt Lake City Marriott Downtown
Schedule of Ground Leased Assets [Line Items]
Ownership percentage of hotel land			21.00%
Annual rent reimbursed by hotel			21.00%
Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Term			30 years
Boston Westin mortgage loan | Maximum
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			2.50%
JW Marriott Denver at Cherry Creek
Schedule of Ground Leased Assets [Line Items]
Ground leases renewal option (in years)			5 years
Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual increase in rent			2.50%
Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Percentage rent			$ 30,000,000
Participation rent			$ 42,000,000		$ 40,000,000
Renaissance Worthington mortgage loan
Schedule of Ground Leased Assets [Line Items]
Ground leases renewal option (in years)			15 years
Through 4/2087 | Bethesda Marriott Suites
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 824,341
10/2007 - 9/2017 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			906,000
10/2017 - 9/2027 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			1,132,812
10/2027 - 9/2037 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			1,416,015
10/2037 - 9/2047 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			1,770,019
10/2047 - 9/2057 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			2,212,524
10/2057 - 9/2067 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			2,765,655
10/2067 - 9/2077 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			3,457,069
10/2077 - 9/2085 | Courtyard Manhattan/Fifth Avenue
Schedule of Ground Leased Assets [Line Items]
Annual rent			4,321,336
Through 12/2056 | Salt Lake City Marriott Downtown
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 132,000
Annual rent expense (as a percentage of gross room sales)			2.60%
1/2013 - 12/2016 | Salt Lake City Marriott Downtown
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 11,305
1/2017 - 12/2017 | Salt Lake City Marriott Downtown
Schedule of Ground Leased Assets [Line Items]
Annual rent			13,000
1/2018 - 12/2056 | Salt Lake City Marriott Downtown
Schedule of Ground Leased Assets [Line Items]
Annual rent			13,500
1/2016 - 12/2020 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			750,000
1/2021 - 12/2025 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			1,000,000
1/2021 - 12/2025 | JW Marriott Denver at Cherry Creek
Schedule of Ground Leased Assets [Line Items]
Annual rent			55,000
1/2026 - 12/2030 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			1,500,000
1/2026 - 12/2030 | JW Marriott Denver at Cherry Creek
Schedule of Ground Leased Assets [Line Items]
Annual rent			60,000
1/2031 - 12/2035 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			1,750,000
1/2036 - 5/2099 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 0
Through 5/2015 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			0.00%
6/2016 - 5/2026 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			1.00%
6/2026 - 5/2036 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			1.50%
6/2036 - 5/2046 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			2.75%
6/2046 - 5/2056 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			3.00%
6/2056 - 5/2066 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			3.25%
6/2066 - 5/2099 | Boston Westin mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			3.50%
1/2016 - 12/2020 | JW Marriott Denver at Cherry Creek
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 50,000
Through 4/2016 | Shorebreak Hotel
Schedule of Ground Leased Assets [Line Items]
Annual rent			115,542
5/2016 - 4/2021 | Shorebreak Hotel
Schedule of Ground Leased Assets [Line Items]
Annual rent			126,649
Through 6/2018 | Orchards Inn Sedona
Schedule of Ground Leased Assets [Line Items]
Annual rent			117,780
7/2018 - 12/2070 | Orchards Inn Sedona
Schedule of Ground Leased Assets [Line Items]
Annual rent			123,499
Through 3/2020 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			16,875
4/2020 - 3/2021 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			33,750
4/2021 - 3/2085 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			34,594
1/2022 - 12/2023 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			390,000
1/2024 - 12/2033 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			312,000
1/2034 - 12/2043 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			234,000
1/2044 - 12/2053 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			156,000
1/2054 - 12/2063 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			78,000
1/2064 - 3/2085 | Hotel Palomar Phoenix
Schedule of Ground Leased Assets [Line Items]
Annual rent			0
1/2019 - 12/2066 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent			67,034
Rent increase (in years)		5 years
Average adjusted gross revenues, period		3 years
Adjusted gross revenues, multiplying percentage		75.00%
Through 12/2018 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 1
Annual rent (as a percentage of gross revenue)			1.00%
1/2019 - 12/2023 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			2.00%
1/2024 - 12/2028 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			3.00%
1/2029 - 12/2033 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			4.00%
1/2034 - 12/2066 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			5.00%
Through 12/2066 | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Annual rent (as a percentage of gross revenue)			10.00%
8/2013 - 7/2022 | Renaissance Worthington mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 40,400
8/2022 - 7/2037 | Renaissance Worthington mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			46,081
8/2037 - 7/2052 | Renaissance Worthington mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			51,763
8/2052 - 7/2067 | Renaissance Worthington mortgage loan
Schedule of Ground Leased Assets [Line Items]
Annual rent			$ 57,444
Scenario, Forecast | JW Marriott Denver at Cherry Creek
Schedule of Ground Leased Assets [Line Items]
Annual increase in rent	3.00%
Rent increase (in years)	1 year
Scenario, Forecast | Cavallo Point
Schedule of Ground Leased Assets [Line Items]
Participation rent				$ 42,000,000