Debt (Details Textual) - USD ($)						3 Months Ended		9 Months Ended
		May 05, 2016	Apr. 05, 2016	Nov. 12, 2015	May 19, 2015	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Jun. 10, 2015	Apr. 13, 2015
Line of Credit Facility [Line Items]
Outstanding borrowings under the credit facility	[1]					$ 130,000,000		$ 130,000,000		$ 165,000,000
Unrealized gain (loss) on derivative instruments						3,007,000	$ (10,631,000)	(13,112,000)	$ (10,723,000)
Gain on Cash Flow Hedge Ineffectiveness						1,500,000
Loss on Cash Flow Hedge Ineffectiveness								324,000	0
Repayments of mortgage debt								90,447,000	57,776,000
Estimated fair value of debt						335,900,000		335,900,000		465,400,000
Embassy Suites San Diego [Member]
Line of Credit Facility [Line Items]
Repayments of mortgage debt			$ 62,800,000
Hotel Modera [Member]
Line of Credit Facility [Line Items]
Repayments of mortgage debt		$ 22,700,000
Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Aggregate liability						18,200,000		18,200,000
Reclassification from AOCI to interest expense						1,500,000	1,600,000	4,700,000	3,700,000
Expected reclassifications in next 12 months								5,300,000
First Term Loan [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Notional amount						300,000,000		300,000,000
Second Term Loan [Member]
Line of Credit Facility [Line Items]
Borrowing capacity						175,000,000		175,000,000				$ 100,000,000
Maximum borrowing capacity												$ 200,000,000
Second Term Loan [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Notional amount						100,000,000		$ 100,000,000
Second Term Loan [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								1.70%
Second Term Loan [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								2.55%
Second Term Loan, Excluded from Interest Rate Swap [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								1.70%
Second Term Loan, Excluded from Interest Rate Swap [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								2.55%
Third Term Loan [Member]
Line of Credit Facility [Line Items]
Borrowing capacity						200,000,000		$ 200,000,000			$ 125,000,000
Maximum borrowing capacity											$ 250,000,000
Third Term Loan [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Notional amount						$ 200,000,000		$ 200,000,000
Third Term Loan [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								1.45%
Third Term Loan [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								2.20%
Series A Notes [Member]
Line of Credit Facility [Line Items]
Proceeds from issuance of senior long-term debt				$ 60,000,000
Stated interest rate						4.70%		4.70%
Series B Notes [Member]
Line of Credit Facility [Line Items]
Proceeds from issuance of senior long-term debt				$ 40,000,000
Stated interest rate						4.93%		4.93%
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member] | Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Increase in borrowing capacity					$ 150,000,000
Borrowing capacity					$ 750,000,000	$ 450,000,000		$ 450,000,000
Maximum borrowing capacity						1,000,000,000		1,000,000,000
Outstanding borrowings under the credit facility						130,000,000		130,000,000		165,000,000
Line of credit facility, remaining borrowing capacity						320,000,000		320,000,000
Unused commitment fees						300,000	$ 200,000	$ 700,000	$ 500,000
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member] | Unsecured Debt [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Annual rate of unused commitment fee								0.20%
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member] | Unsecured Debt [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								1.55%
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member] | Unsecured Debt [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Annual rate of unused commitment fee								0.30%
Revolving Credit Facility [Member] | Senior Unsecured Revolving Credit Facility [Member] | Unsecured Debt [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								2.30%
Term Loan [Member]
Line of Credit Facility [Line Items]
Term loans						675,000,000		$ 675,000,000		525,000,000
Term Loan [Member] | Senior Unsecured Revolving Credit Facility [Member] | Unsecured Debt [Member]
Line of Credit Facility [Line Items]
Borrowing capacity						300,000,000		300,000,000
Term Loan [Member] | First Term Loan [Member]
Line of Credit Facility [Line Items]
Term loans	[2]					300,000,000		$ 300,000,000		300,000,000
Term Loan [Member] | First Term Loan [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								1.50%
Term Loan [Member] | First Term Loan [Member] | Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Line of Credit Facility [Line Items]
Credit facility borrowings LIBOR rate plus								2.25%
Term Loan [Member] | Second Term Loan [Member]
Line of Credit Facility [Line Items]
Term loans	[2]					$ 175,000,000		$ 175,000,000		100,000,000
Term Loan [Member] | Second Term Loan [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate						3.46%		3.46%
Term Loan [Member] | Second Term Loan, Excluded from Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Term loans	[2]					$ 75,000,000		$ 75,000,000
Term Loan [Member] | Third Term Loan [Member]
Line of Credit Facility [Line Items]
Term loans	[2]					$ 200,000,000		$ 200,000,000		$ 125,000,000
Term Loan [Member] | Third Term Loan [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate						3.21%		3.21%
Term Loan [Member] | Term Loan Through July 12, 2017 [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Effective interest rate						2.93%		2.93%
Term Loan [Member] | Term Loan July 13, 2017 through January 15, 2020 [Member] | Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate						3.51%		3.51%

[1] Borrowings bear interest at floating rates equal to, at the Company's option, either (i) LIBOR plus an applicable margin or (ii) an Adjusted Base Rate (as defined in the senior unsecured credit agreement) plus an applicable margin. The Company has two six-month extension options.

[2] Borrowings under the term loan facilities bear interest at floating rates equal to, at the Company's option, either (i) LIBOR plus an applicable margin or (ii) a Base Rate plus an applicable margin. The Company entered into interest rate swaps to effectively fix the interest rate for the First Term Loan, a portion of the Second Term Loan and the Third Term Loan. At September 30, 2016 and December 31, 2015, the Company had interest rate swaps on the full amounts outstanding, except for $75.0 million on the Second Term Loan. See "Derivative and Hedging Activities" above.