Debt - Schedule of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Principal Amount	$ 428,000	$ 400,022
Deferred Loan Fees	(5,856)	(6,117)
Carrying Value	422,144	393,905
Senior Notes [Member]
Debt Instrument [Line Items]
Principal Amount	260,000	260,000
Deferred Loan Fees	(5,238)	(5,771)
Carrying Value	254,762	254,229
Senior Unsecured Term Loan [Member]
Debt Instrument [Line Items]
Principal Amount	100,000	0
Deferred Loan Fees	(618)	0
Carrying Value	99,382	0
Line of Credit [Member]
Debt Instrument [Line Items]
Principal Amount	68,000	45,000
Deferred Loan Fees	0	0
Carrying Value	68,000	45,000
Mortgage notes payable
Debt Instrument [Line Items]
Principal Amount	0	95,022
Deferred Loan Fees	0	(346)
Carrying Value	$ 0	$ 94,676