Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Deferred Leasing Intangibles Included in Total Assets and Liabilities (Parenthetical) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accounting Policies [Abstract]
Accumulated amortization, total assets	$ 30,017	$ 36,327
Accumulated amortization, total liabilities	$ 8,240	$ 9,389