Debt Obligations (Details) $ / shares in Units, $ in Millions	1 Months Ended
	Nov. 30, 2014 USD ($)	Apr. 30, 2004 USD ($)	Jun. 30, 2015 USD ($) $ / shares
Debt Instrument [Line Items]
Proceeds from Convertible Debt	$ 87.5
Convertible Debt Instrument Interest Rate Stated Percentage			5.25%
Debt Instrument, Convertible, Conversion Ratio	118.4553
Debt Instrument, Convertible, Conversion Price | $ / shares			$ 8.442
Debt Issuance Cost	$ 3.4
Unamortized Debt Issuance Expense			$ 3.1
Debt Instrument, Fair Value Disclosure			100.7
Buildings Collateral			59.1
Land Collateral			$ 2.7
Mortgage Loans on Real Estate, New Mortgage Loans		$ 34.0
Debt Instrument, Interest Rate, Stated Percentage			8.23%
Mortgage Loans on Real Estate, Carrying Amount of Mortgages			$ 19.3