Fair Value of Assets and Liabilities (Details 2) (Properties held for sale for which we recognized impairment losses, Current Contracted Sale Prices, Level 3, USD $) In Thousands, unless otherwise specified	Mar. 31, 2014
Properties held for sale for which we recognized impairment losses | Current Contracted Sale Prices | Level 3
Fair Value of Assets and Liabilities
Fair value of assets	$ 218,000