Debt (Details Textual) - USD ($)					3 Months Ended
		Apr. 05, 2016	Nov. 12, 2015	May. 19, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015	Jun. 10, 2015	Apr. 13, 2015
Line of Credit Facility [Line Items]
Outstanding borrowings under the credit facility	[1]				$ 180,000,000		$ 165,000,000
Unrealized gain (loss) on derivative instruments					(11,484,000)	$ (4,169,000)
Loss on Cash Flow Hedge Ineffectiveness					1,771,000	0
Repayments of mortgage debt					1,953,000	53,093,000
Estimated fair value of debt					426,200,000		465,400,000
Mortgage debt					316,967,000		319,320,000
Second Term Loan [Member]
Line of Credit Facility [Line Items]
Borrowing capacity					$ 175,000,000				$ 100,000,000
Expiration date					Apr. 15, 2022
Maximum borrowing capacity									$ 200,000,000
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			$ 125,000,000
Expiration date					Jan. 10, 2021
Maximum borrowing capacity								$ 250,000,000
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]
Maturity date			Dec. 01, 2023		Dec. 01, 2023
Proceeds from issuance of senior long-term debt			$ 60,000,000
Stated interest rate					4.70%
Series B Notes [Member]
Line of Credit Facility [Line Items]
Maturity date			Dec. 01, 2025		Dec. 01, 2025
Proceeds from issuance of senior long-term debt			$ 40,000,000
Stated interest rate					4.93%
Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Aggregate liability					$ 18,000,000
Reclassification from AOCI to interest expense					1,600,000	800,000
Expected reclassifications in next 12 months					5,000,000
Interest Rate Swap [Member] | First Term Loan [Member]
Line of Credit Facility [Line Items]
Notional amount					300,000,000
Interest Rate Swap [Member] | Second Term Loan [Member]
Line of Credit Facility [Line Items]
Notional amount					100,000,000
Interest Rate Swap [Member] | Third Term Loan [Member]
Line of Credit Facility [Line Items]
Notional amount					$ 200,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Expiration date	[1]				Jan. 15, 2019
Revolving Credit Facility [Member] | Unsecured Debt [Member] | Senior Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Increase in borrowing capacity				$ 150,000,000
Borrowing capacity				$ 750,000,000	$ 450,000,000
Maximum borrowing capacity					1,000,000,000
Outstanding borrowings under the credit facility					180,000,000		165,000,000
Line of Credit Facility, Remaining Borrowing Capacity					270,000,000
Unused commitment fees					$ 300,000	200,000
Revolving Credit Facility [Member] | Unsecured Debt [Member] | Senior Unsecured Revolving Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Annual rate of unused commitment fee					0.20%
Revolving Credit Facility [Member] | Unsecured Debt [Member] | Senior Unsecured Revolving Credit Facility [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] | Unsecured Debt [Member] | Senior Unsecured Revolving Credit Facility [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Annual rate of unused commitment fee					0.30%
Revolving Credit Facility [Member] | Unsecured Debt [Member] | Senior Unsecured Revolving Credit Facility [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]
Expiration date					Jan. 15, 2020
Term loans					$ 675,000,000		525,000,000
Term Loan [Member] | First Term Loan [Member]
Line of Credit Facility [Line Items]
Term loans	[2]				$ 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		100,000,000
Term Loan [Member] | Second Term Loan, Excluded from Interest Rate Swap [Member]
Line of Credit Facility [Line Items]
Term loans	[2]				75,000,000
Term Loan [Member] | Third Term Loan [Member]
Line of Credit Facility [Line Items]
Term loans	[2]				$ 200,000,000		125,000,000
Term Loan [Member] | Interest Rate Swap [Member] | Second Term Loan [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate					3.46%
Term Loan [Member] | Interest Rate Swap [Member] | Third Term Loan [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate					3.21%
Term Loan [Member] | Interest Rate Swap [Member] | Term Loan Through July 12, 2017 [Member]
Line of Credit Facility [Line Items]
Effective interest rate					2.93%
Term Loan [Member] | Interest Rate Swap [Member] | Term Loan July 13, 2017 through January 15, 2020 [Member]
Line of Credit Facility [Line Items]
Weighted average interest rate					3.51%
Term Loan [Member] | Unsecured Debt [Member] | Senior Unsecured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Borrowing capacity					$ 300,000,000
AOCI Attributable to Parent [Member]
Line of Credit Facility [Line Items]
Unrealized gain (loss) on derivative instruments					$ (11,484,000)	$ (4,169,000)
Subsequent Event [Member] | Embassy Suites San Diego [Member]
Line of Credit Facility [Line Items]
Repayments of mortgage debt		$ 62,800,000
Hotel Modera [Member] | First Mortgage [Member]
Line of Credit Facility [Line Items]
Maturity date					Jul. 01, 2016
Stated interest rate					5.26%
Mortgage debt					$ 22,730,000		$ 22,833,000

[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 March 31, 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.