Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Deferred Financing Fees (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees, net	$ 787	$ 1,656
Accumulated amortization of deferred financing fees	1,900	2,500
Notes payable, net of deferred financing fees	142,332	177,036
Deferred financing fees, net
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees, net		0
Accounting Standards Update 2015-03
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees, net	$ 787	1,656
Accounting Standards Update 2015-03 | Originally Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Notes payable, net of deferred financing fees		178,692
Accounting Standards Update 2015-03 | Originally Reported | Deferred financing fees, net
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees, net		1,656
Accounting Standards Update 2015-03 | Reclassification
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Notes payable, net of deferred financing fees		1,656
Accounting Standards Update 2015-03 | Reclassification | Deferred financing fees, net
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred financing fees, net		$ 1,656