Debt - Components of Mortgage Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Participating Mortgage Loans [Line Items]
Carrying Value	$ 758,228
Total debt before unamortized debt issue costs	600,834	$ 607,872
Unamortized mortgage debt issue costs	(2,449)	(2,669)
Total debt outstanding	$ 598,385	605,203
Senior Unsecured Revolving Credit Facility
Participating Mortgage Loans [Line Items]
Interest Rate	2.56%
Carrying Value	$ 0
Total debt before unamortized debt issue costs	$ 66,280	65,580
Courtyard by Marriott Altoona, PA (2)
Participating Mortgage Loans [Line Items]
Interest Rate	5.96%
Carrying Value	$ 9,917
Total debt before unamortized debt issue costs	$ 0	5,954
Residence Inn by Marriott New Rochelle, NY
Participating Mortgage Loans [Line Items]
Interest Rate	5.75%
Carrying Value	$ 20,545
Total debt before unamortized debt issue costs	$ 14,321	14,496
Residence Inn by Marriott San Diego, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.66%
Carrying Value	$ 44,963
Total debt before unamortized debt issue costs	$ 29,294	29,555
Homewood Suites by Hilton San Antonio, TX
Participating Mortgage Loans [Line Items]
Interest Rate	4.59%
Carrying Value	$ 33,625
Total debt before unamortized debt issue costs	$ 16,729	16,880
Residence Inn by Marriott Vienna, VA
Participating Mortgage Loans [Line Items]
Interest Rate	4.49%
Carrying Value	$ 31,269
Total debt before unamortized debt issue costs	$ 22,914	23,124
Courtyard by Marriott Houston, TX
Participating Mortgage Loans [Line Items]
Interest Rate	4.19%
Carrying Value	$ 30,847
Total debt before unamortized debt issue costs	$ 18,942	19,123
Hyatt Place Pittsburgh, PA
Participating Mortgage Loans [Line Items]
Interest Rate	4.65%
Carrying Value	$ 36,272
Total debt before unamortized debt issue costs	$ 23,069	23,268
Residence Inn by Marriott Bellevue, WA
Participating Mortgage Loans [Line Items]
Interest Rate	4.97%
Carrying Value	$ 70,050
Total debt before unamortized debt issue costs	$ 46,561	46,907
Residence Inn by Marriott Garden Grove, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.79%
Carrying Value	$ 41,185
Total debt before unamortized debt issue costs	$ 33,919	34,000
Residence Inn by Marriott Silicon Valley I, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.64%
Carrying Value	$ 84,976
Total debt before unamortized debt issue costs	$ 64,800	64,800
Residence Inn by Marriott Silicon Valley II, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.64%
Carrying Value	$ 92,975
Total debt before unamortized debt issue costs	$ 70,700	70,700
Residence Inn by Marriott San Mateo, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.64%
Carrying Value	$ 66,886
Total debt before unamortized debt issue costs	$ 48,600	48,600
Residence Inn by Marriott Mountain View, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.64%
Carrying Value	$ 56,677
Total debt before unamortized debt issue costs	$ 37,900	37,900
SpringHill Suites by Marriott Savannah, GA
Participating Mortgage Loans [Line Items]
Interest Rate	4.62%
Carrying Value	$ 37,946
Total debt before unamortized debt issue costs	$ 30,000	30,000
Hilton Garden Inn Marina del Rey, CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.68%
Carrying Value	$ 43,510
Total debt before unamortized debt issue costs	$ 22,330	22,510
Homewood Suites by Hilton Billerica, MA
Participating Mortgage Loans [Line Items]
Interest Rate	4.32%
Carrying Value	$ 11,494
Total debt before unamortized debt issue costs	$ 16,225	16,225
Homewood Suites by Hilton Carlsbad CA
Participating Mortgage Loans [Line Items]
Interest Rate	4.32%
Carrying Value	$ 29,928
Total debt before unamortized debt issue costs	$ 19,950	19,950
Hampton Inn & Suites Houston Medical Center, TX
Participating Mortgage Loans [Line Items]
Interest Rate	4.25%
Carrying Value	$ 15,163
Total debt before unamortized debt issue costs	$ 18,300	$ 18,300