Debt - Components of Mortgage Debt (Details) - USD ($) $ in Thousands	May 06, 2020	Jun. 30, 2020	Dec. 31, 2019
Participating Mortgage Loans [Line Items]
Property Carrying Value		$ 1,072,844
Total debt before unamortized debt issue costs		665,377	$ 586,860
Unamortized mortgage debt issue costs		(1,202)	(1,395)
Total debt outstanding		$ 664,175	585,465
Senior Unsecured Revolving Credit Facility
Participating Mortgage Loans [Line Items]
Interest Rate		3.11%
Property Carrying Value		$ 397,214
Total debt before unamortized debt issue costs		$ 173,000	90,000
Senior Unsecured Revolving Credit Facility | LIBOR | Minimum
Participating Mortgage Loans [Line Items]
Basis spread on variable rate	2.50%
Senior Unsecured Revolving Credit Facility | LIBOR | Maximum
Participating Mortgage Loans [Line Items]
Basis spread on variable rate	3.00%
Residence Inn by Marriott New Rochelle, NY
Participating Mortgage Loans [Line Items]
Interest Rate		5.75%
Property Carrying Value		$ 20,455
Total debt before unamortized debt issue costs		$ 12,790	12,936
Residence Inn by Marriott San Diego, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.66%
Property Carrying Value		$ 44,234
Total debt before unamortized debt issue costs		$ 26,957	27,272
Homewood Suites by Hilton San Antonio, TX
Participating Mortgage Loans [Line Items]
Interest Rate		4.59%
Property Carrying Value		$ 29,231
Total debt before unamortized debt issue costs		$ 15,381	15,563
Residence Inn by Marriott Vienna, VA
Participating Mortgage Loans [Line Items]
Interest Rate		4.49%
Property Carrying Value		$ 31,535
Total debt before unamortized debt issue costs		$ 21,038	21,291
Courtyard by Marriott Houston, TX
Participating Mortgage Loans [Line Items]
Interest Rate		4.19%
Property Carrying Value		$ 30,651
Total debt before unamortized debt issue costs		$ 17,345	17,559
Hyatt Place Pittsburgh, PA
Participating Mortgage Loans [Line Items]
Interest Rate		4.65%
Property Carrying Value		$ 34,361
Total debt before unamortized debt issue costs		$ 21,278	21,520
Residence Inn by Marriott Bellevue, WA
Participating Mortgage Loans [Line Items]
Interest Rate		4.97%
Property Carrying Value		$ 63,198
Total debt before unamortized debt issue costs		$ 43,433	43,857
Residence Inn by Marriott Garden Grove, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.79%
Property Carrying Value		$ 41,239
Total debt before unamortized debt issue costs		$ 31,762	32,053
Residence Inn by Marriott Silicon Valley I, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.64%
Property Carrying Value		$ 77,528
Total debt before unamortized debt issue costs		$ 63,918	64,406
Residence Inn by Marriott Silicon Valley II, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.64%
Property Carrying Value		$ 85,898
Total debt before unamortized debt issue costs		$ 69,738	70,270
Residence Inn by Marriott San Mateo, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.64%
Property Carrying Value		$ 63,983
Total debt before unamortized debt issue costs		$ 47,939	48,305
Residence Inn by Marriott Mountain View, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.64%
Property Carrying Value		$ 51,144
Total debt before unamortized debt issue costs		$ 37,384	37,670
SpringHill Suites by Marriott Savannah, GA
Participating Mortgage Loans [Line Items]
Interest Rate		4.62%
Property Carrying Value		$ 33,953
Total debt before unamortized debt issue costs		$ 29,590	29,817
Hilton Garden Inn Marina del Rey, CA
Participating Mortgage Loans [Line Items]
Interest Rate		4.68%
Property Carrying Value		$ 38,620
Total debt before unamortized debt issue costs		$ 20,713	20,931
Homewood Suites by Hilton Billerica, MA
Participating Mortgage Loans [Line Items]
Interest Rate		4.32%
Property Carrying Value		$ 13,489
Total debt before unamortized debt issue costs		$ 15,553	15,693
Hampton Inn & Suites Houston Medical Center, TX
Participating Mortgage Loans [Line Items]
Interest Rate		4.25%
Property Carrying Value		$ 16,111
Total debt before unamortized debt issue costs		$ 17,558	$ 17,717